Abstract: The grooved surface of an aberration-corrected holographic model grating is sensed by utilizing the sensing head of a scanning tunneling microscope. The sensing head is mechanically connected to a blazing type stylus for replicating the groove pattern of the holographic model on a ruled grating blank. A ruling engine causes the sensing head not only to scan the surface of the holographic grating model but also drive a blazing type ruling stylus or an equivalent type device in accordance with an error signal resulting from a departure of a sensing tip from the top of the holographic model groove as a function of tunneling current.

Abstract: By mounting a longitudinally extending blade with a mounting block for pivotal movement about an axis perpendicular to the longitudinal axis of the blade, in combination with a distance measuring meter mounted to measuring engagement with the movable blade, a precision squareness measuring gauge assembly is achieved for providing highly accurate measurements of the angular relationship of one surface to a reference surface. In the preferred embodiment, the precision measuring gauge assembly also incorporates pivot limiting means for controlling the arcuate distance through which the blade is able to pivot. In this way, the entire arcuate travel distance of the blade is accurately measured and displayed on the meter, thereby providing a direct accurate measurement of any desired surfaces.

Abstract: A template includes a reference panel for bringing the center of a figure to be drawn into exact alignment with the center of a previously drawn figure. The reference panel, when used in combination with a figure panel having figure holes, allows concentric figures to be drawn accurately.

Abstract: In system and method for registering a flexographic printing plate on a printing cylinder, the printing plate is provided with two alignment holes. A first registration pin is moved with a precision adjustment device to a predetermined location adjacent the cylinder. One of the alignment holes is aligned with the first pin, and the first pin is moved into that hole. The printing plate is then adjusted to move the other hole into alignment with a second registration pin, and the second pin is moved into the other hole. The plate is then adhered to the printing cylinder, and the registration pins withdrawn.

Abstract: The present invention pertains to a plumb bob device for determining the bed height of bulk material in a shaft furnace. The winding drum 1 for unwidning and rewinding a cable 5 or a chain with a plumb bob 6 suspended at its end is driven by a hydraulic motor 3. A displacement transducer 9 is driven by the shaft of the winding drum 1. The motor for driving the winding drum 1 is a so-called low-speed hydraulic motor 3. The displacement transducer 9 sends a signal associated with the actual measured depth to a pressure-proportional valve 10 directly, i.e., without an electrical control device. This valve presets a plumb bob holding pressure associated with the actual depth for the hydraulic motor 3.

Abstract: A measuring platform system is utilized to measure the extent of damaged or misaligned vehicle frames or bodies to expedite the repair thereof. The platform becomes the measuring datum plane from which all measurements as to the pre and post repair locus of a particular reference point on the vehicle are taken as to height above the datum plane and distance from a longitudinal centerline of the datum plane. Means are provided as a part of the platform system to raise the vehicle and move same to a position where the longitudinal vertical plane through the centerline of the vehicle intersects the centerline of the datum plane. A computer can be used as a part of the system.

Abstract: A device for marking lines on a piece of sail cloth for cutting out sections therefrom for making a sail, comprising an elongated and horizontally extending table for supporting a length of sail cloth thereon and being wider than the width of the sail cloth, a continuous strip of gearbelt material extending along each side edge of the table whereby the strips of gearbelt material are parallel to each other and to the longitudinal axis of the table, each strip of gearbelt material being pliant and being provided with internal reinforcements to prevent substantial longitudinal stretching thereof, the upper portion of each strip of gearbelt material being provided with uniformly spaced gear teeth for the length of each strip. A longitudinally moveable carriage is mounted on the table, and a transverse rotatable shift is mounted in the carriage.

Abstract: An ellipsograph structure has first and second arms coupled by pin connections to each other and to a rotatable driving member slidably mounted on a member extending between end supports along a longitudinal axis. A straight line motion mechanism is mounted to one of the end supports for constraining movement of the pin connection between the first and second arms on a straight line along a transverse axis. The straight line motion mechanism includes a pivot member mounted at a fixed pivot point along the longitudinal axis, an extension member in alignment with the longitudinal axis, a swing arm pivotally coupled to the end of the extension member, and a longer guiding arm with one end pivotally coupled to the end of the swing arm and its opposite end pivotally coupled to the pin connection between the first and second arms.

Abstract: A jig for a cross hatching test which is rectangular in shape and is used for ruling straight lines intersecting each other at a predetermined angle on a rectangular test plate, including (a) a first straight line passing on the surface of the jig with an angle, for adjusting the left longer side of the test plate to draw a straight line on the test plate with the right longer side of the jig; (b) a second straight line orthogonal to the first straight line, for adjusting the lower shorter side of the test plate; (c) a third straight line with the predetermined angle to the left longer side of the jig, for adjusting the drawn straight line to draw another straight line with the left longer side of the jib with the predetermined angle to the previously drawn straight line; and (d) an opening interposed in the middle of the first straight line, for adjusting the left longer side of the plate to the first straight line to draw the straight line on the test plate with the right longer side of the jig.

Abstract: A projection scale apparatus and method uses a projection scale on the chain guide of a chain saw. The throttle of the chain saw may be continuously manipulated to prevent the saw from stalling while the diameter of a tree is measured with a scale provided on the chain guide.

Abstract: An attachment for use in association with a shotgun, defined by a clip member formed of memory retentent material such as spring steel mounted about a rib and barrel of an associated shotgun adjacent the muzzle of the shotgun to provide visual indication of a shotgun pattern at a predetermined yardage. The device is defined by a discontinuous sighting tube mounted to spaced left and right flanges, wherein the flanges each include a medially positioned and upwardly projecting respective left and right abutment member and downwardly depending plural pairs of legs for securement in a resilient manner in a shotgun rib.

Abstract: Apparatus comprising a frame (1) and two slides (3, 7, 42; 4, 8, 42'), parallel and arranged side by side, each of which operated by a relevant motor (36, 36'). Coupled to each slide are a linear transducer (72; 72'), that detects the slide position, and a measuring head (15; 16) with a movable arm (18; 19) having a feeler (20; 21) adapted to contact the part (17). For making an apparatus featuring high accuracy and repeatability, but limited overall dimensions, and being adapted for checkings during machining, each slide comprises a linear guide rod (3; 4), movable with respect to the frame (1); a first support structure (7; 8) secured to the rod (3; 4) and arranged at a side of it for supporting the measuring head (15; 16); and a second support structure (42; 42') secured to the rod (3; 4).

Abstract: A highlighter module, adaptable to an overhead viewer is disclosed. The highlighter, when placed on top of an overhead viewer, will highlight a segment of the displayed information by moving a curtain to the desired location. This curtain, attached to tension cables, forms a continuous movement in either direction. The highlighter can be used with or without a cable remote control.

Abstract: A method of measuring the runout between a gauge and the axis of rotation of a wheel to which the gauge is mounted in each of two orthogonally related planes uses measurements of the angle between the axis of rotation of the wheel and the axis on which two or more angle sensors are pendulously supported at two or more rotational positions of the wheel and measurements of the angle of rotation of the wheel at each of said rotational positions to derive a runout equation which may be subsequently used to compute the runout at every possible rotational position of the wheel.

Abstract: A testing device for testing the setting accuracy of a machine by measuring the spacing of a first machine locus with respect to a second machine locus at at least two points on a circular arc, comprises a first, ball-ended probe adapted to be fixed to one part of the machine with the center of the ball representing said one locus. A second such probe is adapted to be fixed to another part of the machine with the center of the ball representing the second locus, interconnecting means for interconnecting said ball ends at a predetermined spacing in mountings permitting relative rotation of the ball ends with respect to the interconnecting means, at least one single axis transducer for sensing the displacement of one ball end, and computing means for calculating from the transducer output the deviation from a precise arcuate path of the first ball-ended probe.

Abstract: A golfing instrument that allows two dissimilar objects, one object presented to the right eye, and the second object presented to the left eye to be seen simultaneously by the golfer, which allows the golfer to align the intended target that the golf ball will travel to be aligned perpendicular to a line crossing the golfer's shoe tips.

Abstract: An angular micro-positioning system cable of readily accessing any angle within 360.degree. and thereafter precisely addressing an angular position within one ten-thousandth of a degree. The device is suitable for use in test equipment or any equipment requiring extremely precise angular positioning. The device includes a rotary motor which is mounted to a secondary frame which is pivotally mounted to a flexibly mounted main frame. The drive shaft of the rotary motor is biased in to engagement with the output wheel. A linear micro-positioner is mounted to the main frame and its drive shaft is coupled to the rotary motor frame to pivot same. The rotary motor is first rotated with the linear micro-positioner locked in place to provide coarse angle positioning. Thereafter, the drive shaft of the rotary motor is locked and the motor frame is pivoted by the linear micro-positioner which provides extremely fine angular adjustment.

Abstract: A template is provided for laying out cut lines for mats utilized in framing prints, stamps and the like. The template's outer dimension provides the outer dimension of the mat and a plurality of precisionly located holes are utilized to place marks on the mat, which marks are connected by lines which intersect with the matting being cut out along the intersecting lines to the intersection of the lines.

Abstract: A tool guide temporarily attachable to vehicle body panels or other surfaces to provide a straight edge, and a contour sander for use in connection with a straight edge. The tool guide includes an elongated member having a longitudinal edge surface for guiding a work tool, and suction cups mounted on tongues extending laterally from the body of the tool guide. The tongues are angled in relation to the body, so that the tongues exert a cantilever force urging the tool guide against a surface when the tongues are secured against the suction cups. The contour sander includes a number of flat blades mounted side-by-side and each having a longitudinal edge for contacting a contoured work surface. A clamp holds the blades in parallel juxtaposition and selectively loosens the blades for conforming contact with the contour. Finger grips are formed at the ends of the blades, allowing the operator to raise or lower any particular blade and obtain a sharper or more accurate reproduction of contour if desired.

Abstract: A graphic calculator (10) for use in technical drawing has means for selectively displaying one of a plurality of sets of division markers wherein each set corresponds to a set of scaled division markers of a particular scale rule. Such a calculator effectively provides a scale rule whose divisions may be altered as desired.Also disclosed is an electronic protractor having a transparent cross-hair viewer for accurately locating the protractor over the lines forming the angle to be measured and means for recording the point at which at least one of said lines extends from under a measuring edge of said protractor.