Abstract: The waterstop joining tool is a two piece tool in which each piece is a nonsuperimposable mirror image of the other piece. Each piece is composed of a flat, planar body having depending side flanges defining a bottom channel adapted for sliding engagement with a section of waterstop. One end of each piece is formed at a 90.degree. angle with respect to the longitudinal axis of the tool, and the opposite end is formed at a 45.degree. angle, both ends having a vertical flange extending superiorly to the plane of the body. The body of each piece is bisected by an arch along the medial longitudinal axis, the arch being adapted for supporting the walls of the center bulb of the waterstop. In an alternative embodiment, each piece is arched on both sides, and optionally hinged to a bottom tool, to accommodate waterstop sections having a dumbbell shape in cross section. In use, the tool pieces are used as templates to cut the ends of two waterstop sections at either 90.degree. or 45.degree. angles.

Abstract: A roll profile measuring method uses a displacement detector mount provided movably in a reciprocating manner along an axial direction of a work roll, and a displacement detector set of two displacement detectors mounted at a center distance L.sub.c from each other on the displacement detector mount for measuring irregularities in the surface of the work roll in the axial direction of the work roll. The roll profile measuring method comprises: measuring irregularities in the surface of the work roll over the total length of the work roll by moving the displacement detector mount in the axial direction of the work roll; and processing a data stream of composite measured values obtained on the basis of the difference between measured data provided by the displacement detectors to determine the surface profile of the work roll in the axial direction of the work roll.

Abstract: A tool and method for aligning multiple shaft segments which are coupled together to form a single rotating shaft. The device comprises a cylindrical bar having an annular, axially-extending outer surface, rotating means on a first end of the bar, and engaging/disengaging means fixed on the second end of the bar. The bar is temporarily inserted through a bolt hole in the collar of the first shaft and partially through an aligned hole in an adjacent coupling of the second shaft until at least a portion of the engaging/disengaging means is positioned within the bolt hole of the second collar. The engaging/disengaging means engages the second collar so that a turning force from the first shaft is transmitted to the second shaft. The engaging/disengaging means also disengages from the second collar by rotating the bar after rotation of the shaft is ceased.

Abstract: An apparatus for measuring flatness of a surface includes a locator element slidingly engageable with a slider element in a first direction, and a height measuring instrument having a linear probing device is mounted to the slider element. An alignment feature is used for limiting relative motion between the sliding element and the locator element to the first direction when the slider element is engaged with the locator element. An exemplary embodiment includes a locator block having a top side and a bottom side and a slider block engageable with the locator block on the top side. An elongated aperture is disposed through the locator block and is elongated in the first direction. A mechanical dial indicator with a plunger rod projecting is mounted in the slider block and the plunger rod is positionable through the elongated aperture.

Abstract: A bucking and wrapping gauge suitable for installing windows is provided. The bucking portion of the gauge provides a constant setback distance for a window buck relative to outer edge of a window opening without using a ruler or other measurement tool. The wrapping portion of the gauge provides a constant wrapping distance that partially compensates for the thickness of the window buck so that it may be determined where to install an interior wall relative to a window frame so that a window wrap and the interior wall abut at a substantially right angle. The wrapping and bucking gauge may be implemented as a separate wrapping gauge and bucking gauge.

Abstract: The laser alignment tool includes a laser beam emitter supported in a projector assembly which, when mounted on a precision alignment component, such as a pulley, is directed at a target assembly mounted on another precision alignment component. The plate of the target assembly against which the laser beam is directed is coated, textured or the like (e.g., has inscribed cross hairs) to produce a distinctive visual effect when struck by the laser with the precision alignment components in the correct or preselected alignment relative to one another. Moreover, if the precision alignment components are not in the correct or preselected alignment, impingement of the laser beam against the target plate does not produce the distinctive visual effect. The target plate may be contoured such that the distinctive visual effect indicates that the precision alignment components are in the correct or preselected alignment relative to one another in additional orientation planes.

Abstract: A test apparatus and method utilize a proximity sensor to detect the deflection of an optical disc spindle as the spindle is supported on a rotatable spindle support. The proximity sensor is disposed at a fixed location relative to the rotational axis of the rotatable spindle support, and is configured to output a variable proximity signal associated with the distance between the proximity sensor and the optical disc spindle. The output of the proximity sensor is fed to an electrical circuit to determine whether the deflection is outside of an acceptable range during rotation of the rotatable spindle support. If so, an indication is provided to an operator to permit the operator to repair or discard the spindle, as appropriate. In addition, a length detector is used to provide an indication of the length of the optical disc spindle so that the electrical circuit can adjust the acceptable deflection range for different lengths of optical disc spindles.

Abstract: A new framing tool for aiding in the construction of a structure. The inventive device includes a member having a substantially straight base side edge, a handle side edge, and a pair of opposite end edges extending between the base side edge and the handle side edge. The base side edge has a plurality of slots extending between the first and second faces of the member. The slots are spaced apart from one another. A first slot is positioned adjacent one of the end edges, while a second slot is positioned adjacent another of the end edges. Third and fourth slots are positioned between the first and second slots.

Abstract: A simple and accurate stowage drum and capstan alignment system and method or the Deployable Array Work Group (DAWG) is provided. The system includes a drum reference point fixture for obtaining the drum centerline, a drum sighting assembly and a capstan sight alignment fixture. For each spoke of the drum brought to a predetermined position adjacent the drum reference point fixture, the distance between the bulkhead and the inner and outer flanges of the drum is measured and the centerline position is calculated by averaging the readings. The drum sighting assembly is positioned within the drum and aligned with the calculated centerline. The capstan sight alignment fixture is positioned on the capstan. Looking through the scope of the drum sighting assembly to the capstan sight alignment fixture, measurements are taken of the offset, roll and rotation of the capstan unit relative to the drum. Additionally, a measurement of the drive shaft/flex coupling keyway freeplay is obtained.

Abstract: This invention relates to a device for simultaneously centering a plurality of substrates, particularly semiconductor wafers W.A plurality of turntables 23 for supporting the semiconductor wafers W are arranged at a predetermined spacing in the vertical direction. All of the turntables 23 are driven by a single, common servo motor 28. Clutches 26 for each of the turntables 23 are disposed on rotational shafts 38a and 38b that are driven by the servo motor 28. A drive pulley 41 is attached to an output side of each clutch 26 and each drive pulley 41 drives the corresponding turntable 23 via a belt. A sensor device 29 for detecting a notch formed in the peripheral edge of each semiconductor wafer W is disposed on an outer side in the radial direction of each of the turntables 23.A wafer W is placed on each of the turntables 23 and is centered. The servo motor 28 operates in a state in which the clutches 26 are connected, so that all of the turntables 23 start to rotate simultaneously.

Abstract: A surface profiler 10 has a forward support wheel 20, an intermediate support wheel 21 and a rearward support wheel 22 for travelling along a surface, the profile of which is to be measured. The wheels 20, 21, 22 are spaced apart at predetermined distances longitudinally of the direction of travel for travel along substantially the same line along the surface. The profiler 10 further comprises a forward frame member 40 supported by the forward and intermediate support wheels 20, 21 and a rearward frame member 41, supported by the intermediate and rearward support wheels 21, 22. The forward and rearward frame members 40, 41 are pivotally connected together about the rotation axis of the intermediate support wheel 21. Angle measuring means 30 is provided for measuring the relative orientation of the forward and rearward frame members 40, 41 with respect to the rotation axis of the intermediate support wheel 21.

Abstract: A hand-held tool is provided for use in mounting a de-railed chain onto a multi-toothed chain sprocket. The tool includes a two-part clamping member with an attached handle. When the two sections are brought together, grooves on the inner surfaces mate to form a series of bores that are sized to receive the teeth of the chain sprocket therethrough. In use, the tool is placed onto the chain sprocket with the sprocket teeth extending through the bores and the de-railed chain resting on the handle. The tool is tilted upward to slide the chain onto the clamping member and the extended teeth of the sprocket. The fastener(s) holding the two sections of the clamping member together is then disengaged and the tool is removed from the sprocket, with the chain re-mounted on the chain sprocket.

Abstract: An apparatus for detecting the presence of a wafer cassette, or pod, resting on an arrangement of pins allows cassette detection without interfering with insertion of a robotic paddle arm beneath the cassette to remove it for transport. A cassette resides on an arrangement of beveled pins which mate with corresponding receptacles on the underside. Pins supporting the cassette have a spring biased, hollow outer cylinder coaxially mounted around a center post. A cassette placed on the pins displaces the outer cylinder downward a sufficient distance to trigger a sensor. Upon removal of the cassette, the outer cylinder is displaced upwards, resetting the sensor.

Abstract: A method and apparatus to gage the spacing between a plurality of handling elements used for transferring planar objects into and out of holding receptacles in a semiconductor process. The handling tweezers are moved to a checking location and fit interleaved with the gage apparatus. If the handling tweezers do not fit, the tweezers are moved to an accessible maintenance location for alignment and recalibration enabling its use for transferring semiconductor wafers to and from wafer holding receptacles in a chemical vapor deposition vertical diffusion furnace.

Abstract: The present invention is a tool for spacing frame members having an elongated body which has a first and a second track. A cradle, formed by a first head and a second head, can be adjusted to accommodate a first frame member of width W, and a shoulder, formed by a third head, can be spaced apart from the cradle to engage a second frame member, separated from the first frame member by a spacing interval I. Each of the heads slidably engage the first track and the second track of the elongated body, and each have an indexing face which is substantially normal to the elongated body. The heads are lockable with respect to the first and second tracks. Preferably, the elongated body has a bubble level to aid in identifying when the body is horizontal. When a bubble level is employed, each head has a levelling surface, the levelling surfaces being co-planar, providing a discontinuous reference surface for levelling.

Abstract: An alignment tool is provided for aligning collecting plates of an electrostatic separator in substantially a common plane. The alignment tool includes a pair of elongated alignment members, at least one of which is of a convex configuration. The collecting plates, including any misaligned collecting plates, are sandwiched between the alignment members with the convex surface of one of the alignment members opposing the collecting plates. The convex member is then brought to a parallel position by forces applied to opposite ends thereof, and the alignment members are temporarily clamped in generally parallel relationship to each other which maintains the collecting plates aligned in a generally common plane. Thereafter, a rod of a permanent clamping mechanism having a plurality of loops is rested atop either of the alignment members and rotated to bring the loops into and through gaps between adjacent collecting plates.

Abstract: A device for aligning multiple shaft segments which are coupled together to form a single rotating shaft. The device has two elongate cylindrical bars each having an annular, axially extending outer surface, one end by which it is rotatable, and the other end which is engagable and disengagable to the other cylindrical bar. One of the bars is inserted into an aperture of one of the shaft segments and the other bar is inserted into the other one of the shaft segments. The engageable and disengagable sections of the bars are arranged such that when the bars are engaged the force of the bar that is rotated is transferred to the other bar and when the rotated bar is rotated from the engaged position the bars are not in contact.

Abstract: An improved vehicle body repair apparatus comprising a rigid planar framework, horizontal bars adjustably attached to the framework, and extension members adjustably attached to and depending from the horizontal bars, the extension members comprising set point members for making contact with set points on undamaged portions of a damaged vehicle, and the extension members including a repair set point extension member for creating a reference point with respect to which the damaged portion of the vehicle can be repaired.

Abstract: A portable and or modular alignment system for establishing the proper axial alignment of a first rotatably mounted shaft, and a second opposed, rotatably mounted shaft. The first shaft extending from a first unit, while second shaft extends from a second unit. The axial alignment of the first shaft with the second shaft is achieved by adjusting the relative horizontal and vertical position of the first unit with respect to the second unit, where the second shaft may be assumed to be fixed in position. The alignment system comprises a control and computing unit for receiving alignment information indicative of vertical and horizontal position changes to be provided to align the first shaft with the second shaft. Changes in the vertical position are provided by a plurality of vertical actuator units, while changes in the horizontal position are provided by a plurality of horizontal actuator units.

Abstract: In a method for locating a wall form assembly at an intended position on a floor of a concrete structure, a number of retaining grooves are initially formed in the floor at a boundary of the intended position of the wall form assembly. Thereafter, a number of upright positioning implements are mounted on the floor in the retaining grooves, respectively, before the wall form assembly is hoisted onto the floor such that an outer side of the wall form assembly abuts against the positioning implements to limit deviation of the wall form assembly from the intended position. A positioning implement and a guiding implement for use in the aforesaid locating method are also disclosed.

Abstract: Apparatus and method are disclosed for adjusting the alignment of surfaces in close proximity. The apparatus includes at least three travel sensitive switches fixed in a non-linear configuration, each switch having a known actuating distance, and a display connected to the switches to show the status of each switch. In order to align two surfaces in parallel, the switches have essentially the same actuating distance. The switches are placed between the surfaces and the surfaces are moved together until the display shows that one or more switches is actuated. The information provided by the switches guides alignment of the surfaces to achieve essentially simultaneous actuation of all switches having actuating distances which correspond to a desired alignment when the surfaces are moved within the actuating distances of the switches. A second set of at least three travel sensitive switches having a smaller actuating distance than the first set of switches can be used to simplify the alignment process.

Abstract: An apparatus and method for maintaining proper alignment of an iron-style golf club prior to and during installation of a handle grip includes generally U-shaped shaft supports and a biased, preferably gravity-driven, self-adjusting, leading edge alignment assembly creating a vertical plane defined by at least a pair of parallel horizontal rails positioned one over the other, the horizontal rails being slidable along inclined linear bearings to facilitate adjustment until the leading edge of the strike face of an iron-style club head contacts two of the rails to ensure vertical alignment. A clamp is further provided to lock a properly aligned iron-style golf club in place prior to installing a handle grip on the butt-end of the shaft.

Abstract: In a method for measuring the flatness of a floor with an inclinometer, the relative elevation of the floor is determined at the beginning and end of a survey line, and then a plurality of inclinometer measurements in one direction along the survey line are performed. The difference in relative elevation at the beginning of the survey line and the end of the survey line is then used so as to correct for accumulated offset errors in the inclinometer measurements. The use of such elevation differences to correct the accumulated offset errors in the inclinometer measurements eliminates the need to perform inclinometer measurements in a reverse direction, and thereby reduces time required for the performance of such measurements. The accuracy of the device is improved by reducing the distance between measurements and by averaging a plurality of consecutive measurements.

Abstract: An L-shaped positioning tool is I-shaped in cross section, including inner and outer flanges on a centrally positioned stem, with aligned slots being formed in the edges of the flanges to receive screws and a screwdriver for fastening the positioning tool to a workpiece. Alternatively the positioning tool may be temporarily fastened to a workpiece through the use of a strip of material having adhesive on opposite faces. After the workpieces have been fastened together, the positioning tool is removed from the first workpiece by the adhesive being softened through application of heat or a solvent.

Abstract: The apparatus is for internal inspection of a guide tube of a nuclear fuel assembly and measurement of deformations of a zone of smaller diameter in a terminal portion of the tube. The apparatus has a stick whose distal portion presents, in succession, starting from a distal end of the stick-shaped means, a guiding swelling having an easy fit in the zone of smaller diameter and two projections. The first projection carries two sets of diametrically opposite strain sensors provided with conductors linking them to a proximal end of the stick. A sleeve slides in a running portion of the guide tube above the zone of smaller diameter and slides over the stick. The sleeve and said stick-shaped means have mutually cooperating abutments for limiting displacement of the sleeve towards the distal portion to a position where the sleeve surrounds the stick.

Abstract: Determination of the verticality of various structures such as high rise buildings and towers is enabled through various methods involving use of a series of tiltmeter devices, a remote positioning system, or a combination of both. These methods are particularly useful in monitoring deviations from vertical during construction work and adjusting a jumpform. The tiltmeters are typically arranged in a line on the structure and polled to characterise varying tilt states in which displacement of each device increases with height up the structure. The remote positioning measurements are typically made in real time using a satellite based system such as GPS. Departures of a survey point on the jumpform from a vertical target line may be used to monitor verticality during the construction process.

Abstract: A device for forming a planar mounting surface in a chosen reference plane forward of one or more of structural members having a front face at least partially displaced rearwardly of said reference plane has a member (30) of extended length including a pair of legs (36, 38) supported by a perpendicular base portion (32). The legs define a pair of parallel faces spaced a distance corresponding to the width of the structural member (16') upon which the member is to be mounted. The base has an outward-lying flat planar face. The member is aligned on the structural member such that the outward-lying face is oriented and maintained along the reference plane, and the member is nailed or otherwise affixed to the structural member.

Abstract: A gauge for measuring an out-of-plane surface displacement profile around a cold-worked fastener hole in relation to the distribution of residual compressive stresses around the hole and related fatigue life. The gauge has a deformable strain sensor positionable to be deformed in accord with the out-of-plane surface of the structural material circumferentially surrounding the cold-worked hole. A measurement reporting readout device is in communication with the strain sensor and relates three-dimensional surface-profile measurement data in accord with strain sensor deformation to determine or verify the cold expansion magnitude, uniformity and consequent fatigue life through three-dimensional elastoplastic finite element comparative analyses and/or experimental measurements for a hole in any material of given thickness.

Abstract: The invention comprises a pair of telescopic sight mount aligning bars. Each bar comprises an elongated rod having a planar circular inner end bounded by a circular peripheral edge. The circular inner ends of the two bars are perpendicular to the longitudinal axis of their respective bars, and the inner ends of the two bars have substantially identical diameters and peripheral edges so that the two inner ends may be closely juxtaposed when used to align, and to check the alignment of, a telescopic sight mount. Consequently, a telescopic sight mount misalignment will be revealed by a misalignment of the peripheral edges relative to one another and also will be revealed by a non-parallelity between the two inner ends.

Abstract: An apparatus for correcting an orientation and a geometry of a front surface of a semiconductor wafer and holding the wafer in a state in which the adjusted surface state is kept. The apparatus has a chuck for holding a wafer; a surface measuring means for measuring a state of a front surface of the wafer; a surface adjusting means including a plurality of surface correcting portions vertically movable for partially deforming the holding portion, whereby the surface of the holding portion is deformed by independent actions of the surface correcting portions; and a tilting portion as an orientation adjusting means for adjusting a tilting angle of the front surface of the wafer with respect to the center axis thereof and an orientation of the tilting.

Abstract: A gauge and method for reestablishing the designed relationships between the block, heads and intake manifold of a V-engine after it has been disassembled for refinishing. The angular relationship between the surfaces of the heads is ascertained to determine if they are correctly oriented prior to final assembly with the intake manifold.

Abstract: A structural member alignment tool is provided for aligning and connecting misaligned structural members having bores therethrough and a method for using same. There is also provided a flange alignment tool kit comprising a structural member alignment tool and a plurality of sleeves and a method for using same. The sleeves decrease the inner diameter of the structural member bores thereby allowing the structural member alignment tool to align misaligned structural members.

Abstract: Apparatus for determining the flatness of a generally circular polishing pad through direct measurement of the pad for use in maintaining the flatness of the pad and the flatness of surfaces of articles polished on the polishing pad of a polisher. The apparatus includes a measuring device, a frame mounting the measuring device being capable of measuring a distance between an upper surface of the polishing pad and a reference plane at plural locations along the polishing pad. The apparatus further includes a controller for controlling the measuring device. The controller is configured to indicate whether the flatness of the pad falls outside a predetermined specification.

Abstract: An inspection tool for verifying the relative planarity of a flat surface or for verifying whether a first planar surface is parallel to a second planar surface is described. The tool includes a dial indicator on the end of a flexible support arm which is rotatably mounted on a base with a planar bottom surface. The flexible support arm permits the dial indicator to be positioned in contact with the planar bottom surface of the base and the axis of rotation is adjustable with respect to the planar bottom surface which allows the device to be self-calibrating. One application of the device is verifying whether the ring carrier or probe card of a wafer prober is parallel with the wafer probe chuck. The planar bottom surface of the base is placed on the wafer probe chuck and the support arm is rotated with the dial indicator in contact with the ring carrier or the probe card. Any deviation in the dial indicator reading indicates that the surfaces are not parallel.

Abstract: A headlamp position indicator device is used to denote the proper aiming position of a headlamp in an adjustable headlamp assembly. The headlamp assembly includes a housing, a movable component adjustably retained in the housing, and adjustor mechanisms for aiming the movable component. The headlamp position indicator device of the present invention includes a magnet mounted on the movable component and an assembly mounted on the housing. The assembly includes a holder having a cover member mounted thereon and a position indicator mounted therebetween. The cover member has a plurality of indicia thereon. The position indicator may be a ferrous ball bearing or a pointer member. The position indicator is magnetically attracted to the magnet and moveable relative to the housing according to the position of the magnet. Once the headlamp is zeroed, a zero indicia on the cover member is moved so as to be proximate to the position indicator.

Abstract: An apparatus for aligning bricks placed in a predetermined pattern during construction of a static structure, particularly a chimney, with the bricks being placed in an angular relationship with upstanding walls of the chimney, includes an assembly for attaching the apparatus to a preexisting vertically oriented wall portion of the chimney, with the attachment assembly being removably attachable to and extending parallel with the wall portion, an assembly for supporting bricks oriented in a predetermined angular relationship with the wall portion with the brick support assembly being disposed in an angular relationship with the wall portion and aligned for brick abutment thereagainst and an arrangement for connecting the brick support assembly to the attachment assembly with the brick support assembly projecting a predetermined distance away from the attachment assembly in a predetermined angular relationship therewith.

Abstract: A bicycle frame aligning device holds the extremities of the frame at a fixed reference height above a reference plane. The bottom bracket shell is clamped to a mounting shaft pivoted between the shell and the reference plane, so that misalignment of the bicycle frame causes the shaft to tilt from perpendicular to the reference plane. Integral gauges referencing the shaft display the misalignment. The same gauges also display the deflection applied to align the frame to align it. The frame displacements needed to align the frame are applied with a crank attached to a high efficiency jacking screw. The combination of the crank action and integral gauges allows precise incremental alignment effort to be applied, thus making the alignment process more efficient and reducing the chance of buckling the bicycle frame.

Abstract: A test apparatus for measuring the relative flatness of a side of an object. The test apparatus includes an electronic probe immobilized in a surface plate such that the contact member of the electronic probe is adjacent to the plane of the surface plate. The use of a surface plate directly eliminates the dial indicator and the trio of stands and their problematic features such as translating the flatness of the surface plate. The use of a high resolution probe permits the relative flatness of the surface plate to be taken into account for the first time. For example, to enhance the accuracy of the relatively high resolution of which the electronic probe is capable of measuring, the flattest portions of the testing surface of the surface plate are determined and the bore in which the electronic probe is set is drilled in one of the "most flat" portions.

Abstract: An apparatus for measuring fuel assembly bow and twist comprising a fixturing apparatus, a reference device and an ultrasonic measuring device.

Abstract: A vehicle mounted backing distance gauge is provided, in which a plunger, normally biased to an extended position, extends approximately ten inches behind the vehicle, and as the vehicle is backed toward an object such as a loading dock, the plunger comes into contact with the object and retracts into a casing mounted to the driver's side of the vehicle. The plunger has an internal beam that moves in concert with the plunger, and through the use of a bevel gear pair and a follower arm controllably moved by the forward end of the internal beam, an indicator sign is rotated or pivoted by a shaft coupled to one of the bevel gears from a first position parallel to the side of the vehicle and extending toward the rear of the vehicle, to a diametrically opposed position parallel to the vehicle, but extending toward the front of the vehicle.

Abstract: Vehicle gauging apparatus employing a travelling gear box and a pair of gears contained therein to mount two gauge arms to move inwardly and outwardly along parallel paths with respect to one another. One embodiment employs an integral measuring tape and pivotable level gauge, as well as end-mounted measuring pins, while another provides pivotable suspension blocks adaptable to receive respective pinch well clamps or threaded stud pin holders. A male mounting ball and female mounting pin provide the ability to use the two embodiments together in particular measuring operations.

Abstract: A device for aligning a broadhead on an arrow shaft supports the shaft for rotation about its axis while the head is received in a centering fixture comprising a block of magnetic material having a tapered recess therein. The block is held by a permanent magnet, and the contacting surfaces of the magnet and block provide a floating mount for the block that permit it to seek a position aligning a broadhead, inserted in the recess, with the associated rotatably supported arrow shaft. Once aligned, the cement that secures the head to the shaft is allowed to harden to secure the head fast to the shaft in the aligned condition.

Abstract: An alignment verification device for a rotating shaft that utilizes a calibration adapter assembly that has a longitudinal center axis. Mounted on the calibration adapter assembly in a concentric manner is a dial indicator. The stem of the dial indicator is to be placed against a precisely manufactured alignment shaft which has been temporarily substituted for a rotating shaft whose axis of rotation is to coincide with the longitudinal center axis of the calibration adapter assembly. Rotational relative movement between the stem and the shaft will produce readings on the dial indicator with any deviations of the axis of rotation from the longitudinal center axis being discovered by the dial indicator. A zeroing mechanism is to be utilized in conjunction with the calibration adapter assembly prior to connection with the rotating shaft. The zeroing mechanism takes the form of a gauge plug which is to be mounted in a close tolerance manner within a through hole formed within the calibration adapter assembly.

Abstract: An apparatus for continuously and automatically measuring deformation and warp of a shaped electrode plate for electrolysis before the electrode plate includes means for lifting shaped electrode plates 1 hanging from crossbars 2 one by one to a predetermined measurement position by a suspending apparatus having a hanger mechanism and adjusting it about a measurement vertical plane position; for so freely suspending the electrode plate 1 vertically about the underside of a crossbar 2 that the electrode plate is not subject to deformation caused by the influence of its own weight or external forces; and a computing device 23 for continuously scanning the flatness of the electrode plate 1 by a moving mechanism which moves sensors 11a, 11b which measure distances between the electrode plate 1 and planes parallel to and facing the front and rear sides of the electrode plate 1 respectively without making contact with the electrode plate horizontally and vertically over those planes and A/D converting and analyzing

Abstract: A bolt hole alignment pin for assisting in aligning mating flanges in piping systems comprises a head, a first portion for slip fit with the bolt holes in the flanges, a second portion for centering a gasket between the mating flanges, and a third portion offset from the second portion for providing a cam action when the head is turned to bring the flanges into exact alignment.

Abstract: A reticle which can detect precisely an error in reticle rotation. A first main vernier is formed at an outer side of the right end of the unit field and a sub vernier is formed at the left end. A second main vernier is formed at the outer side of the upper end of the unit field, and a sub vernier is formed at the lower end. Another reticle uses a first main vernier on the right scribe lane zone, and a sub vernier on the left. A second vernier is formed on the upper side, with its sub on the lower side. These verniers are used together to determine an error.

Abstract: An apparatus for measuring and correcting the straightness of a hollow vacuum nozzle for semiconductor assembly equipment comprises a collet which can rotate over 360.degree. and holds the nozzle. An indicator, such as a dial indicator, has a tip which conformally and continuously engages the nozzle so that as the collet and nozzle are rotated the indicator tip rides on the nozzle. Any horizontal movement of a bent nozzle is shown on the indicator. The bend in the nozzle can then be repaired and rechecked while the nozzle is installed in the collet.

Abstract: A method is provided for determining the straightness and balance of an archery arrow having a longitudinal axis and a magnetically attractive tip. The method comprises providing a magnet located in an elevated position, suspending the arrow by its tip from the magnet with the arrow's shaft passing through a stationary ring, spinning the suspended arrow about its longitudinal axis, and observing perturbations in movement of the spinning arrow relative to the ring that are indicative of warp or imbalance in the arrow. A device for performing the method of this invention is also provided. The device comprises a support frame having one end configured to be mounted to a wall or the like and another end bearing a magnet from which an arrow can be suspended. Preferably, the magnet is formed with a dimple for receiving and positioning the tip of an arrow for which straightness and balance are to be determined.

Abstract: Disclosed is a new masking tape with tool guide for facilitating application of joint compound to wall joints and edges formed by drywall panels used to construct interior building walls. The masking tape with tool guide comprises an elongated strip of flexible tape having pressure-sensitive adhesive disposed on one side thereof whereby the paper strip may be adhered to a drywall panel adjacent a joint to be finished with joint compound. The tape is divided centrally longitudinally into a first half and a second half with release paper covering the pressure-sensitive adhesive of the first half and a straightedge member fixedly adhered to the second half of the paper strip by the pressure-sensitive adhesive. The straightedge member comprises an elongated strip of flexible solvent-resistant plastic having an integral longitudinal lip formed along one edge thereof.

Abstract: A device for measuring the straightness of a conductive object includes a plurality of capacitive distance sensors which are aligned along an axis of a ruler to be placed on the object. Circuits are provided for indicating the measurements provided by each sensor.