Abstract: An exemplary height-adjusting device (10) includes a base (12), a sliding block (14) and at least one fixing member (18). The base has a sliding slot (122) defined therein and a first sidewall (123), a second sidewall (124), a third sidewall (125), and a fourth sidewall (126) surrounding the sliding slot. At least one fixing hole (1232) defined in the first sidewall. The at least one fixing hole communicates with the sliding slot. The sliding block is slidably received in the sliding slot and partly protruding outwardly from the sliding slot. At least one fixing member cooperates with the at least one fixing hole to selectively fix the sliding block in the base.

Abstract: An apparatus for displaying or measuring a trigonometric sine or cosine is provided, which includes a planar surface with a circle or a portion thereof and a bisecting line through the center of the circle. Two arms are attached to the apparatus. The circle, bisecting line and second arm include incremental markings that correspond to the degree and/or radian measurements of the unit circle, trigonometric cosine and trigonometric sine, respectively. A method is also provided which includes rotating one of the arms to a position along the circle to form an angle. Based upon the position of the first and second arms the trigonometric cosine and trigonometric sine of the angle can be read. An electronic display device that displays the trigonometric sine and trigonometric cosine of an angle can also be included.

Abstract: MY INVENTION IS A MACHINE VISE JAW, MODIFIED WITH 0.063″ HOLES, TO ACCEPT {fraction (1/16)} DOWEL PINS TO PROVIDE THE MACHINIST EASY SET UP TO MACHINE ANGLES IN AN “KURT ANGLE LOCK VISE”.

Abstract: A device for measuring alignment of a golf club is provided, and allows measurement of the lie angle and loft angle simultaneously. The strike face of the club is placed against an abutment member that is fixed to a base member, and held in place with a clamping member. An alignment member is coupled to the base member and spaced from the clamping member in generally opposing relation thereto. The alignment member is movable with respect to the clamping member to receive the golf club shaft in a cradle.

Abstract: An angle measurement tool includes a frame supporting a rectangular plate upon which a calculator is positioned. The frame further supports a pivotal sine bar having a bubble assembly supported thereon. The angle measurement tool provides angle measurement and setting by positioning the lower edge of the plate upon the surface of interest and pivoting the sine bar until the bubble assembly indicates a horizontal attitude of the sine bar. The calculator is a dedicated calculator providing basic functions of finding an angle given its opposite side measurement or finding an opposite side given the angle. In an alternate embodiment, a plate defines a reference edge and a plurality of angles and receives a removable bubble assembly which is utilized for measuring standard angles.

Abstract: A very accurate, multiple position, miter device or gauge for use with a table saw or the like includes a protractor having a plurality of equally spaced precision drilled step-holes, a sine bar, a micrometer adjust, and a guide bar adapted to fit within a guide groove or miter slot. In accordance with a particular example, the device includes a protractor having thirteen equally spaced, angled step-holes precisely spaced at 15.degree. from one another. The micrometer adjust includes a thimble screw having 1/6020 (one minute) increments with one full revolution of the thimble screw adjusting the angle of the sine bar by 1/40 (15 minutes). Also, the guide bar includes 0.degree., 3 3/4.degree. and 7 1/2.degree. offset threaded openings for receiving an angle hole lock shoulder bolt which passes through the protractor and into the guide bar. Hence, the miter device can be set at selected precise 15.degree., 7 1/2.degree. and 3 3/4.degree. increments using the angle step-holes, the 0.degree., 3 3/4.degree.

Abstract: A feature dimension transfer tool which includes a longitudinal body with a longitudinal axis and a flat surface, a first cylinder with a longitudinal axis, the first cylinder being attached next to the flat surface of the longitudinal body and the longitudinal axis of the first cylinder being substantially parallel to the flat surface of the longitudinal body and substantially perpendicular to the longitudinal axis of the longitudinal body. A carriage is slideably mounted on the longitudinal body and a second cylinder with a longitudinal axis is mounted on the carriage, next to the flat surface of the longitudinal body. The longitudinal axis of the first cylinder is substantially parallel to the flat surface of the longitudinal body and substantially perpendicular to the longitudinal axis of the longitudinal body.

Abstract: This invention relates to an instrument for measuring the degree of an internal chamfer and comprises a cylinder (5) which is moved axially within a housing (1) and having three equally spaced longitudinal slots (16) therethrough; a knurled handle (3) for sliding the cylinder within the housing; a set screw (4) in the handle for selectively locking and unlocking an indicator gage to the cylinder; a piston (6) slidably disposed in the cylinder and contacting the indicator gage point (7); a spring (11) biasing the piston from the indicator stem (15); three equally spaced link blades (8) extendable through the corresponding slots in the cylinder of which one end of each link blade is pivotally mounted to piston and the other end of the link blade of the respective set is pivotally attached to one end of one corresponding blade of a set of three measuring blades (9) and the other end of the respective blade of the set of measuring blades being pivotally fastened to the lower end (10) of the cylinder which is redu

Abstract: A precision miter gauge that consists of a sine-plate assembly mounted on a guide bar for engagement in a conventional table-saw miter slot. The sine-plate assembly comprises a stationary plate substantially perpendicular to the guide bar and a hinged plate pivotally connected to the stationary plate by a hinge pin having an axis of rotation disposed at a predetermined distance from the hinged plate, so as to form a variable angle between the two plates. A gauge block adapted to produce exact predetermined angles is positioned between the stationary plate and a reference pin pivotally coupled to the hinged plate and having an axis of rotation disposed at the same predetermined distance from the hinged plate as the hinge pin's axis. As the gauge block is firmly secured between the reference pin and the stationary plate, the hinged plate provides a solid and precise fence for cutting a workpiece at the selected angle.

Abstract: Method and apparatus for measuring the waviness of an aerodynamic surface includes a sensing unit that provides a plurality of data values which indicate the vertical deflection of a sensor at predetermined positions along the surface. A microprocessor receives the plurality of data values and processes the values in accordance with a method to determine the waviness of the surface. The microprocessor determines which of the plurality of data points have a convex curvature with respect to the data points to which it is adjacent and uses the convex data points to define lines which are tangent to the surface. The tangent lines are used to identify waves in the surface. The depth and length of each wave is determined from the tangent lines and the waviness calculation performed in accordance with a predetermined waviness formula.

Abstract: A method and apparatus for calibrating a jig bore is provided. An angle iron is provided having a sine bar and a portion, which is disposed at an acute angle to a plane parallel to an x-y axis, disposed integrally thereon. The angle iron is designed to calibrate the jig bore with a minimum of time and set-ups.

Abstract: An adjustable clamp is provided for sine plates that make use of gage blocks to set the appropriate height and angle. A chain is disposed through a clamp block having two capstans. An adjustable screw bolt wedges the chain against the capstans and can increase or decrease the tension on the chain depending on whether the chain is pulled between the capstans or released. The chain ends are bolted to the bottom plate of the sine plate and hooked over a catch on the upper plate. Increasing the tension in the chain applies pressure between the gage block and the plates of the sine plate to prevent the gage block from being inadvertently displaced. The clamp stabilizes the sine plate so that the workpiece has a stable mounting.

Abstract: An improved sine bar apparatus for the precise measurement of angles for machining operation. The sine bar apparatus comprises a flat, rectangular base which has an upper and a lower surface with four sides. A collet adapter extends from one side of the base at right angles thereto in a plane which is parallel to the upper surface of the base and there is at least one slot extending transversely of one side of the base. A reference bar is attached to one of the other sides of the base and has a support surface which extends above the upper surface of the base. An elongated, generally rectangular sine bar, which has a reference surface extending along one side, is pivotally connected to the base and is supported on the upper surface of the base. The sine bar is pivotally connected at a point intermediate its ends, though the transverse slot adjacent the side of which the reference bar is attached, and has one of its ends in contact with the support surface of the reference bar.

Abstract: A protractor quadrant tool accessory is provided and consists of two arms attached pivotally together at one end, degree calibrations so that the angle between the arms is readily read and a locking device whereby the angle between the arms can be maintained fixed so that the protractor quadrant tool accessory can be used by a machinest and carpenter to measure angles on various articles. In a modification stud guides attached to outer parallel straight edges of the arms can stabilize the tool accessory when measuring the stairways stud angles and the like, used as an isometric center finder and making equal and opposite converse lines upon a stud. In still another modification an adjustable trimitre is slideably locked upon one arm so as to stabilize the tool accessory when measuring the stud angles and the like to be cut.

Abstract: The angle gauge employs pivoted, straight edge arms having indicia therealong to determine length of the arms of bent or angled material as measured from the virtual apex of the angle of bend regardless of the radius of bend. Angle indicia is also provided at the pivot for determining the angle of bend.

Abstract: This discloses an improved sine bar for accurate measurement of angles for machining operations, and methods of its use. This comprises a rectangular elongated base member, projecting from opposite ends of which are cylindrical connecting rods. A conforming reference bar is hingedly connected to the base member, and has a cylindrical bearing pin fastened beneath one end. When the sine bar is open to accommodate one or more calibrated gauge blocks, a spring-biased chain keeps the gauge block(s) in position between the base member and the bearing pin. A recess in the base member permits measurement of small angles. This device is especially adapted for use in setting up a lathe compound to calibrated angular positions, but is also useful for other types of milling and machining operations in which the sine bar rests on a flat surface.

Abstract: An adjustable angle block apparatus for aiding in the making of set-ups in tooling, production, inspection and the like in the machining art is provided with a pivotably connected pair of bars having a first device for establishing non-precision angular relationships between the two bars and a second device for establishing high precision angular relationships therebetween.

Abstract: A gauge in the nature of a hand tool determines the radius of a rounded corner disposed between two flat side surfaces on a workpiece. As the gauge is placed in a position to straddle the workpiece, a pair of spaced, perpendicular stops on the gauge engage the flat surfaces of the workpiece to align the latter relative to the gauge. The device also includes a bar which is shiftable along a line bisecting the angle between the flat stops, and an axially shiftable arm is pivotally mounted on one end of the bar. A dial indicator having a work contactor is secured to one end of the arm, and as the work contactor is moved to slidingly traverse the convex surface of the workpiece, the indicator reveals whether the pivotal axis of the work contactor coincides with the center of curvature of the convex surface. Both the arm and the bar are shifted until the pivotal axis coincides with the center of curvature, whereupon the radius of the convex surface may be readily measured by means of a depth micrometer.