Abstract: An apparatus for measuring workpiece concentricity having a base, a concentricity spin fixture, a spring-biased shaft, a collet, a follower member, and a concentricity indicator. The concentricity spin fixture receives a collet which receives workpieces of varying shank diameters and drive profiles. A follower member designed to engage a specific workpiece drive profile is biased against the workpiece drive profile by the spring-biased shaft. A test operator measures concentricity by rotating the workpiece using the concentricity spin fixture and by measuring the movement of the follower member against the spring-biased shaft using the concentricity indicator. The apparatus is capable of measuring the concentricity of workpieces having a shank and a drive profile, such as screws, bolts, other fasteners, and punches.

Abstract: A system for transferring finger and thumb hole locations from a first bowling ball having finger and thumb holes to a second bowling ball which employs a transparent template marked to show the hole locations and the location of the first bowling ball positive axis point. The template is applied to the second bowling ball and that ball marked through the marks indicating the hole locations.

Abstract: Disclosed is a tool for marking tiles having a predetermined thickness, so that the tiles may be cut precisely to enable them to be placed adjacent each other and spaced apart a predetermined, uniform, distance corresponding to the thickness of a desired grouting thickness. The tool includes a generally flat, elongated, rectilinear bar having a pair of opposed ends, a pair of opposed sides, and generally flat top and bottom opposed faces. A plurality of different sized slide elements are selectively used with the bar depending of the desired thickness of the grouting. Individual ones of the slide elements are adapted to be carried by the bar and movable along the length of the bar between the ends and removed from the bar by sliding off an end. Each of said slide elements have a body member which is supported by the top face and has a pair of opposed arms extending along and bearing against the sides. The arms have a height less than the thickness of the tile.

Abstract: A wheel alignment device having a frame, a plurality of abutment members fastened to the frame and extending outwardly therefrom, a bubble level fastened to the frame so as to provide an indication of inclination of the frame relative to vertical, and an indicator interactive with the bubble level for producing a humanly perceivable display of a degree of inclination. Each of the abutment members has an end opposite the frame which is coplanar with the ends of the other abutment members. These ends are arranged so as to be parallel relationship to the frame. An insert member is slidably received by the frame and has a first transverse surface at one end and a second transverse surface at another end. A bungie cord is connected to the frame and extends outwardly therefrom for flexibly attaching the frame to a wheel.

Abstract: In measuring apparatus, a workpiece-contacting probe is mounted on a probe-supporting assembly which is maintained at a constant temperature by bathing it with liquid. The liquid is supplied at a constant temperature by a heat exchanger system which also supplies liquid to hydrostatic bearings in the probe-supporting assembly. Before being measured, the workpieces are immersed in a bath which is maintained at a constant temperature. Liquid is fed into the immersion bath by a probe provided with liquid outlets which can be directed against selected areas of a submerged workpiece.

Abstract: An adjustable plumb level having a first gear driven by a second gear. The second gear has a smaller external diameter than does said first gear. The second gear is operatively coupled to first gear so that when an external force causes the second gear to rotate, the first gear also rotates. The first gear includes a straight vial disposed in the center thereof.

Abstract: There is disclosed a device and method for providing signals representative of the positional altitude of a user. The device is responsive to hand or head movements to move a dampened substance contained within a confined tube past one or more sensors. Light passing through the tube is interrupted by the movement of the dampened substance which can be a liquid or a solid object within a viscous liquid.

Abstract: A method is provided for fitting an eyeglass frame to a wearer. The method includes the steps of providing frames which have been classified into predetermined temple to temple size ranges based on the temple to temple frame sizes of the frames. The wearer's temple to temple head size is measured using a device which indicates at least one temple to temple size range as corresponding to the wearer. Eyeglass frames are fitted to the wearer selected from the frames which fall within the temple to temple size ranges corresponding to the wearer.

Abstract: A blind hole finder tool is provided which consists of a C-shaped spring member, with a pair of elongated arms, each extending from one side of the C-shaped spring member. A mechanism is on a distal end of the first arm for engaging with an original rivet hole in a top rail of a trailer. Another mechanism is on a distal end of the second arm, being in alignment with the engaging mechanism, for marking the hole location in new roof material after the new roof material is placed upon the top rail, so that the new roof material can be secured to the top rail at the original rivet hole.

Abstract: I have invented a new and novel "holder" to hold individual threadwire gauges used to measure the thread pitch of screws and bolts. The holder takes full advantage of the properties of new materials used in the holder, including magnets, rubber and synthetic plastics. The holder will accomodate and hold in place without the use of hands on the threadwires, the wire-sets used to measure the thread pitch using the three wire method and a micrometer.

Abstract: An improved multi-functional ruler is disclosed comprising a body of a ruler including an axial seat and an axial rod having convex blocks at each of its two ends attached with rollers. The convex blocks are separately connected to the interior of axial nuts. The axial nuts and the axial seats are tightly fixed together, with an axial block located at a central part of the internal lateral side of the body of the ruler. When the axial rod of the forementioned structure is set in motion, it will not cause a tremendous area of friction with the body of the ruler. It will slide smoothly without causing any position shifting of the axial rod so as to enable lines to be accurately drawn. The axial block can function as a center from which circles of different diameters can be drawn.

Abstract: An assortment of proportional cropping templates for film, contacts or prints designed with various cutouts and having demarcations to give depth measurements when selected image is enlarged to a specific width size. An assortment of templates of preferred embodiment such as metal, tinted acetate or plastic, each designed to overlay on film, contacts or prints. Each template will have various sized vertical cutouts to allow tracing and viewing of any desired crop selection. Each cutout has along either side, inch demarcations that represent the actual depth size of an image when that cutout portion is enlarged to the specific width size labled on the template.

Abstract: An all-purpose level in the form of a box that contains a ball rolling on an upwardly concave surface that is a figure of revolution about a vertical axis. The box rests on a member which will be horizontal when the level is in engagement with a truly vertical or horizontal surface. For this purpose, the member is disposed at a right angle to a plate which is hingedly connected to another plate about an axis perpendicular to the plane of the member. The member is selectively lockable in that perpendicular relationship; but when released, the member folds against the first-mentioned plate and the device thus folds about two hinges at right angles to each other, thereby to provide a configuration in which the level can rest on a generally horizontal surface to indicate true horizontal orientation thereof.

Abstract: A terrain profiling apparatus for quick and inexpensive profiling of relatively large areas of ground. A prime mover pulls a sled across a terrain to be profiled. A gyroscope on the sled indicates slope and a measuring device records distances moved. Slope and distance signals are used by a computer to indicate terrain profile.

Abstract: A sensor for an inclination measuring device which comprises a capsule (3) part-filled with a conductive liquid. First to fourth electrodes (A-D) are disposed within the capsule in contact with the liquid. An electrical signal is applied between electrodes (C, D) and one then the other of electrodes (A, B), to derive a signal indicative of the degree of immersion of the electrode (A), and then the electrode (B) within the liquid. The ratio of these signals is related to the angle of inclination of the capsule about the reference axis O and relative to a first reference angle defined at the gap between the electrodes (A, B). A similar gap, defining a second reference angle is disposed between electrodes (C, D), perpendicular to the gap between electrodes (A, B), and by reconfiguring the electrodes (A-D), to measure the degree of immersion of electrodes (C and D), the sensor is able to sense any angle of inclination about the reference axis.

Abstract: A device to accurately define the angle relationship between a peripheral grinding wheel and it's tool rest in the vertical plane. The device uses the wheel periphery and tool rest surface to control the angle between the two. It is an 400 accessory to existing grinders. It is a separate device from the grinder enabling it to be used on several machines. It is not required structure for the grinding operation.

Abstract: A fixture for use with a retractable tape measure having a tab at the end thereof perpendicular to the tape. The fixture has a base with opposed side walls at least one of which defines a recess for receiving the tape end tab therein. A retaining member extends over a portion of the for frictionally retaining the tape between the base and the retaining member. A spacer bar extends away from one of the side walls intermediate the tape and the surface on which the fixture rests to protect the surface when the tape and the fixture are moved therealong. A combination of the fixture and a retractable tape measure is also disclosed.

Abstract: In a capacitive-type linear displacement measuring device, a pick-off body is resiliently biased into sliding contact with a scale. The pick-off body is supported by a flat spring and resiliently biased towards the scale by a leaf spring. The front surface of the scale slides in abutting contact with the front surface of the pick-off body. The flat spring restrains non-axial movement of the pick-off body but permits movement normal to the axial movement so that the pick-off body accurately tracks and remains in abutting contact with the scale as it slides in an axial direction. Changes in capacitance caused by axial displacement of the scale are accurately sensed and changes in capacitance caused by non-axial motion are avoided.

Abstract: A non-marring drawing instrument includes a rolling member for supporting the body of the instrument on a drawing surface in spaced apart relation thereto. The rolling member is mounted on the body for movement between respective rolling and locked positions of the member projecting from the body. A resilient member constrains the rolling member in its rolling position, for rolling movement of the instrument on the drawing surface, and yields for movement of the rolling member into its locked position. Frictional braking structure, which may include the resilient member, engages the rolling member in its locked position, for immobilizing the instrument. Braking is accomplished by pressing the instrument body towards the drawing surface.

Abstract: An outlet location device for marking the location of an outlet box or the like sealed behind a panel comprises a first plate and second plate slidably mounted to one another. Each plate carries a locator pin extending normally from one side of the plate, and a marking pin extending normally from the other side of the plate and opposite the locator pin. The first and second plates are slidably affixed to one another so that the distance between the first and second locator pins may be adjusted to fit into the cover plate mounting holes of an installed outlet box.