Abstract: A laser marker which includes a casing having a battery chamber covered by a lid, a level bearing plate fastened to the casing at the bottom, a level mounted on the level bearing plate above the casing, adjustment rack pivotably fastened to the casing by two spring-supported locating plates and two axle caps to hold a light concentrator, a rotary socket covered by a lens cover to hold a lens in line with the light concentrator, whereby the adjustment rack is turned on the casing and retained in the desired angle by the locating plates, and the rotary socket is turned on the adjustment rack to let the light of the light concentrator be emitted through the lens and formed into a light spot or a line of light projected on an object.

Abstract: A locking and measuring device which includes a housing having a top wall, a bottom wall, a first spaced end wall and a second spaced end wall, with a first opening in the first spaced end wall, and a second opening in the top wall, an extendable length of substantially strong and durable, yet bendable material having a terminal end, the length of material being normally, retractably stored in the housing with the terminal end at all times exteriorly accessible of the first opening; the terminal end of the length of material includes a locking end zone to be inserted into the second opening wherein it is matingly received and releasably captivated until released; along the length of material graduated indicia are provided defining a measuring scale.

Abstract: A device for measuring the movement of a drill pipe string, the end of which is held during drilling by an attachment assembly (12) movably along at least one guide rail (16), comprises a sensor assembly (38) mounted on the attachment assembly with a roller (42) designed to run on the rail as the attachment assembly moves.

Abstract: A portable device for monitoring the wear of a tire and the geometry of a wheel set of a vehicle has a probe for measuring a depth of each tread groove of a tire, a display, a symbolic representation of a set of wheels, and indicators. The device includes a control system for processing and calculating measurements, reference values and compared values relating to rate of wear and the condition of the geometric state of the tire. Resulting calculations and comparisons are displayed on the display and indicators are activated based on the calculations and comparisons made.

Abstract: An opening clearance measuring tool that functions as a combination taper gauge and parallel gauge includes a wedge-shaped "taper block", a sliding linear scale predisposed to parallel movement along an upper edge of the taper block, and a digital read-out linear scale measuring and display unit that accurately measures a translational displacement of the sliding scale with respect to the taper block and displays the displacement in millimeters. The angle between the upper and lower edge surfaces of the taper block forms the wedge of the tool and defines the particular slope or "taper" for the gauge. The slope is predetermined to incorporate a linear conversion factor between metric and English units so that the display may be used to indicate clearance measurements expressed in mils. The scale measuring and display unit is fixedly secured to the taper block and, as the linear scale slider is moved past (through) the scale display unit, the translational displacement of the slider is measured and displayed.

Abstract: A telescope inner tube locking device and method for positively locking the telescope inner tube in it's previously aligned position. The locking is accomplished by using a biased locking screw which operates to apply a force against the inner tube of the telescope while the windage and elevation adjustment screws on the telescope are moved. Thereafter, the biased locking screw locks the inner tube against the windage and elevation adjustment screws. In a modification of the preferred embodiment, the inner tube of the telescope may also be locked by using a locking screw constructed similarly to the elevation or windage screws in combination with a separate spring bias. The separate spring bias will apply a force against the windage and elevation screws of the telescope and the locking screw will lock the inner tube in place. The tube may also be locked by a third locking screw without using a bias.

Abstract: A fishing line length measuring device to determine the let out or wound up amount of the fishing line based on the number of spool revolutions. The device has a reel, a spool rotatably supported by the reel where the fishing line is wound up, a sensor to detect the revolutions of the spool, an up/down counter to count up or down the pulse signals output from the sensor, a storage means which receives and holds the count values obtained at the up/down counter when the counter counts actual number of spool revolutions during winding or unwinding the fishing line for specified lengths from a certain reference point set on the fishing line, an operation means to determine the line length using the line length formula obtained corresponding to the numbers of spool revolutions for the specified lengths and these actual numbers of revolutions, and an indication unit to indicate the line length determined by the operation means.

Abstract: A workpiece holding system includes a connector for mounting a workpiece-holding pallet or upper plate to a workstation with the high degree of accuracy that is necessary for workpiece machining operations. The upper plate connects to the workstation via a pair oppositely directed, extendable/retractable connectors aligned along an axis of connection, with a total of four connectors and two spaced axes of connection. Each connector includes a pin, an actuating knob and a wrap spring. For each connector, extension and retraction along the respective axis occurs by rotation of the actuating knob. The wrap spring interconnects the actuating knob to the pin in a slippable manner. The wrap spring acts as a torque limiting device during rotation of the knob to extend the pin into engagement with the upper plate, and it acts as a clutch during rotation of the knob to retract the pin from engagement with the pallet.

Abstract: A picture frame hanging wire applicator tool includes an elongated body member, an end member attached to and projecting transversely from an end of the body member for holding the body member in relation to a top edge of a picture frame, and a series of longitudinally-spaced apart protuberances in the form of pegs carried along a front side of the body member. Each of the pegs carried by the body member provides a means for retaining a picture frame hanging wire at an apex point which is at a known distance from the top edge of the picture frame. Indicia labels can be provided on the back side of the frame for recording the distance between the hanging wire apex point and the top edge of the picture frame for use by the end user or person who later will hang the picture frame at a desired location on a wall.

Abstract: A body, having a straight-edged rule fixed thereto, and transverse thereto, slidably receives a pair of blocks which also have straight-edged rules fixed thereto. All the rules are parallel, and one thereof is used to engage a proximate wall surface, while the other two are adjustably set to take the measure across a last-laid tile. Then, the first, which engages the wall surface is fully retracted, while the adjustably-set other two rules are advanced, with the body, to the wall surface. The outermost rule, then, along its straight edge, defines whereat a next tile is to be cut to fit an undersized space.

Abstract: An accessory for addition to a standard carpenter's level includes: a light source fastenable into the finger slot common to such levels and fiber optic, light-transmitting tubes extending from the light source to illuminate the bubble vials of the level.

Abstract: An infant measuring and growth charting device having a substantially flat bottom base of a length and width to accommodate infants to be measured, a fixed head board, and a slideable locking foot board, the infant being place in the device, the foot board slid forward to touch the bottoms of the infants feet, the infants legs being fully extended, and the device locked into place. An embedded ruler is affixed into the upper surface of the bottom base, and a viewing hole in a portion of the sliding foot board, over the embedded ruler, follows, and displays the measurements of the infant, and when the exact measurement of the infant is displayed in the viewing hole, the foot board is locked into that position, and this exact measurement will be in the viewing hole for later recording, or, photographing. After the infant is removed from the measuring device, a T-square charting device is inserted into the same groove used to guide the moveable foot board.

Abstract: A self centering guide pipe axis laser guide is based on the use of three parallel links spaced 120 degrees apart which are engaged to be expanded or contracted. When expanded the links contact the inside diameter of the pipe which accordingly establishes the center axis of the pipe. The driving means for the links is a rotating screw mounted in a base centrally located with respect to the three links. In the front of the base is a laser module whose beam is aligned with the center axis of the pipe once the links contact the inner diameter of the pipe. Gauges mounted in a saddle on top of the pipe determine the proper slope once the center axis has been established. A calibrated scale on the guide can be used for determining both inner and outer diameters of the pipe. While the laser guide has been illustrated in determining the center line of pipes, it also has other uses such as aligning pillow blocks to a center line.

Abstract: An apparatus for measuring compound angles. This apparatus makes use of the standard T-bevel square, which is capable of measuring only a single angle. The invention is a compound angle blade with a split collet joint. The compound blade attaches by replacing the bolt of the T-bevel with fastening means attached to the split collet joint of the invention. This fastening means secures both the compound angle blade and the standard T-bevel square blade. The split collet joint which is attached perpendicularly to the main body of the T-bevel moves in a 360 degree radius parallel to the main body of the T-bevel. The compound angle blade is capable of rotation in approximately a 180 degree radius relative to the split collet joint. The combination of the rotation of the split collet joint and the compound angle blade allows for compound angle measurements both perpendicular and askew relative to the angle of the standard T-bevel. The angles of both blades are fixed by the same fastening action.

Abstract: A gear socket structure for a designing rule, of which the gear socket is a round cylinder, having a given height; the wall of the gear socket is provided with two leaf springs; the top of each leaf spring has an inward catch hook; the gear socket can accommodate a plurality of gears, which are held in place by means of the catch hooks without falling out unintentionally.

Abstract: A sensing head for a three-dimensional sensing of a workpiece includes a housing; a lid secured to the housing at one end thereof; a transmission member axially slidably received in the housing; a transducer mounted in the housing and cooperating with the transmission member for generating a signal representing axial displacements of the transmission member; a spring disposed in the housing and urging the transmission member toward the lid; and a bearing body disposed in the housing between the lid and the transmission member. The bearing body is a spherical segment having a base and a spherical surface. The base is in contact with an inner face of the lid. A sensing pin secured to the bearing body passes through the lid. The transmission member has a circular edge constituting a seat being in a circular contact with the spherical surface and centering the bearing body in the housing.

Abstract: The invention relates to an inspection device for inspecting the dimensions of an object, the device being of the type comprising a support-forming portion together with an elastically deformable system having two measurement arms and an element connected to the arms in such a manner as to be displaced in an axial direction for co-operating with an associated displacement sensor. According to the invention, the deformable system is in the form of a one-piece element that is generally W-shaped, with two hinged measurement arms connected together by two link arms, together with an axially movable central arm; the one-piece element is essentially flat, and it deforms in its own plane when contactors provided at the ends of the hinged measurement arms are moved apart or towards each other. The device is particularly applicable to inspecting inside or outside diameters of mechanical workpieces.

Abstract: A bow angle tuner for aligning an arrow to an archery bow, for precise arrow flight, while the arrow is in the bow, by measurements or comparisons which integrate a minimum of five mechanical bow adjustments, and the diameter of the arrow. A planar member includes a groove, either angular or circular, on one face in which an arrow, of any commercially available diameter, is releaseably secured. One or more rulers, of suitable and equal length, are releaseably attached to, or integral to, the planar member and positioned in such a manner that the rulers form an included angle of less than one hundred eighty degrees and the included angle is bisected by the groove in the planar member and centers on the groove in the planar member.

Abstract: The linear measuring device comprises a rail (1) with a fixed measuring jaw (4) and a slide (5) with a movable measuring jaw (6). A holding member (9) with a handle hole (10) is adjustably mounted on the rail (1). The slide (5) has a ring (20) arranged displaceably therein. This ring is connected with a clamping piece (30) via connecting elements (36, 39). This clamping piece, after attaining a predetermined measuring pressure, is brought into the clamped position on the rail (1) and thus permits the maintenance of a constant measuring pressure, the slide (5) being shiftable, with the clamping piece (30) being locked in place, under the action of the spring (32) with respect to the clamping piece (30) whereby the measuring object can be adjusted into the precise measuring position under spring force. The arrangement of handle hole (10) and ring (20) offers the advantage that maximally precise measurements can be quickly performed in correspondence with a scissor-like operation of the device.

Abstract: A drafting tool for drawing a circle or curved arc has interlocked, independently rotatable concentric rings. The rings have radially extending openings that can be aligned to form a radial track. A carriage for carrying a pencil or other marking element is slidable along the track to a desired radial position. The carriage can occupy one or more than one of the rings and rotates with the ring(s) around a center point. The carriage has a locking structure that is spring biased to retract and advances to lock the carriage in position at the desired radius when the pencil or the like is inserted. The locking structure can have a tooth for engaging between teeth along the radial openings in the track, the teeth on the track forming part of the sliding support for the carriage. The rings have complementary tongues and grooves, and nodules on at least one of the abutting surfaces of the tongues and grooves minimizes surface contact to reduce friction.