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: A thin, flat gauge for determining the size of the bore of a shotgun, the gauge having a width, the dimension of which is stepped, the width of the steps decreasing from the top of the gauge to the bottom. Alternatively, the gauge may be tapered from wider at the top of the gauge to narrower near the bottom. Lettering and numbering indicating bore diameter are silk screened, etched or otherwise inscribed on the gauge.

Abstract: Apparatus for measuring the headspace of the case of a cartridge using a caliper having a fixed blade and a movable blade composing a body member attached to one of the blades of the caliper. The body member has a longitudinally extending bore into which is inserted an annular extension of a bushing, the bushing having a bore preselected to be equal to or substantially similar to the datum reference circle of a case of the cartridge, the headspace of which is to be measured.

Abstract: The invention relates to an adjustable cartridge case gauge comprising a head portion adjacent to the shoulder of the case and a foot portion adjacent to the surface of the breech, the construction being such that the distance between the head portion and the foot portion are infinitely adjustable.

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: 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, spinning the suspended arrow about its longitudinal axis, and observing perturbations in movement of the spinning arrow 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: A device for assisting in the adjustment of sights for a hand gun including a base elongated in the direction of the axis of the barrel of the gun. The forward end of the base includes a pair of lateral spaced support legs, and the rear of the base includes a single vertically adjustable support leg. Adjacent the forward end is a spacer block having a bolt hole extending laterally therethrough. A clamping jaw is located adjacent each lateral side of the spacer block, with the clamping jaws having resilient foam or similar material on their inner faces. These inner faces are adapted to abut against the lateral sides of the frame of the hand gun to retain it in position and absorb recoil when the gun is fired. To move the clamping jaws into a clamping engagement with the hand gun, there is provided a bolt extending through the hole in the spacer blocks and the associated clamping jaws, with a manually operable nut threaded upon the bolt to provide a clamping force.

Abstract: A combination gauge measures (1) the depth of the projectile inside a cantube bore after the projectile has been rammed and seated in the lands and grooves of the rifling of the cannontube and (2) any angular deviation of orientation of the rammed/seated projectile normal to the centerline of the cannontube. A data logger electronically records the measured data and a computer stores and analyzes the data.

Abstract: A bow mounted multiple tuning gauge is disclosed having a multiple position dial indicators located against an arrow shaft. A multiple tuning gauge defines a support frame and head plate with dial indicators, mounted on a adjustable mounting assembly, with means for adjusting the device to properly measure the movement of the arrow shaft.

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: A fixture for measuring runout in firearm cartridges, casings and bullets is provided. The fixture holds the cartridge at the tip and forward of the rim for rotation. A self centering tip bearing holds the tip of the cartridge, casing or bullet for rotation about an axis of rotation. The exterior surface of the cartridge, casing or bullet is supported in a V-shaped knife edge bearing. The distance from the knife edge bearing to the tip bearing is adjustable to accommodate various cartridge sizes. Interchangeable tip bearing tools are provided for rotatably holding bullets and casings, and for locating areas of variation in the thickness of the casing wall. The thickness indicating tool has a flat surface offset from the cartridge axis, which rests against the curved interior surface of a casing, forming a chord which supports the interior surface at two points. The gauge arm, placed on the outside of the casing between the two points, can then measure the relative thickness of the casing wall.

Abstract: A tool for use in conjunction with a firearm to facilitate the performance of various functions with regard to the firearm. The tool includes a cartridge case simulator which is mounted at a distal end of a tubular rod. The end of the simulator opposite an end at which a bullet is to be positioned for subsequent identification of a desired location relative to an intended corresponding cartridge case is provided with an aperture, and an axial passage in the simulator, thereby, communicates with an axial duct in the tubular rod, the rod and simulator being axially aligned. A gauge shaft is disposed for reciprocal movement along the axial aligned passage and duct. A distal end of the shaft is intended to engage the base of a bullet so that the bullet can be urged to a desired axial position relative to a mouth of the cartridge case simulator.

Abstract: An apparatus for measuring the distance between an outwardly extending planar surface on a head space gauge and a planar surface surrounding the head space gauge on the barrel of a gun. This distance is used to calculate the head space of a gun. A housing is provided for abutment with the planar surface on the barrel and has an opening for receiving a sleeve of a dial indicator. A set screw arrangement is provided for securely holding the sleeve of the dial indicator in a desired relationship for the measurement process.

Abstract: An arrow balancing tool is used in establishing the optimal balance point on an arrow to produce the most efficient flight characteristics in accord with manufacturer recommendations. Assuming that the optimal balance point will fall toward the nose end of the arrow, approximately 7 to 10% of the arrow length removed from the midpoint of the arrow, the invention provides a base with a scale graduated in units equivalent to 57% of the length of the arrows being balanced. A second scale is graduated in units representative of 60% of the lengths of the various arrows to be balanced. A reference point, zero on the various scales, is established at which the nock of the arrow is positioned. A fulcrum, slidingly coupled to the tool, is adjusted until the balance point of the arrow is determined. Indices on the sliding fulcrum are positioned for a readout on each of the scales. Actual scale values reflect current manufacturer recommendations for optimal balance of an arrow.

Abstract: A firearm cartridge headspace gauge consisting of a threaded cylindrical barrel and threaded head is machined internally to precisely match the external dimensions of a given firearm cartridge. A scale is provided on the gauge barrel and mating head. When a cartridge is inserted into the barrel and the head is installed to the point at which the interior of the head contacts the cartridge, the scale may be read to determine any difference from the optimum headspace for that type and caliber of cartridge. Varous sizes of cartridge headspace gauges may be produced so as to conform precisely to the dimensions of any cartridge desired. The gauge provides a method of quickly and precisely checking the exact headspace of any cartridge, whereupon the cartridge may be resized as necessary after removal from the gauge.

Abstract: The archery device permits an archery arrow to be correctly centered along is length with respect to the bowstring so that upon release of the bowstring the arrow will fire straight ahead with improved accuracy. The device includes an elongated arm which is either L-shaped or U-shaped, a connector for releasably securing the arm to the sidewall of an archery bow and an aligning component. The aligning component enables one to mark the transverse position of the bowstring and then position the front of an arrow, when the rear of the arrow is attached to the bowstring, at the same transverse position as the bowstring so that the arrow is aligned with the bowstring and parallel to the sidewall of the archery bow. The connector allows the arm to be rotated therearound in a plane parallel to the sidewall of the bow and can include a threaded post.

Abstract: The bore communicating primer pocket and the interior of the base of a cartridge case is internally threaded and a threaded shaft end is threaded through the bore to a position with the terminal end of the shaft spaced inwardly of the open end of the casing. A bullet is telescoped rearwardly into the open end of the casing an excessive amount into seated engagement with the shaft end and the entire combination comprising the shaft, casing and bullet is forwardly telescoped through the receiver of a rifle subsequent to the removal of the rifle bolt and to a position with the casing fully seated within the receiver of the rifle barrel. Thereafter, the shaft is threaded forwardly relative to the casing in order to gradually displace the bullet from the open end of the casing until such time as the maximum girth area of the bullet engages the rifling in the rear end of the rifle bore.