Abstract: Apparatus for promoting straight golf ball flight paths by promoting in flight rotation of a golf ball along its horizontal axis by assuring horizontal alignment of parallel grooves of the face of a golf club as the club strikes a golf ball comprising a frame having an alignment ridge for insertion into one of said parallel grooves, means for securing level indication means to the frame in parallel alignment to the alignment ridge, level indication means, and means for temporarily attaching said frame to the face of a golf club in such a manner that said level indicator indicates the horizontal alignment of said parallel grooves.

Abstract: A drill scope comprising a calibrated protractor that can be read directly in terms of angle of tilt of the drill bit and a pivoting spirit level support means with tilt angle marker and bull's-eye bubble level that can be pivoted to a selected angle of tilt and then held in that position during use of the drill. In this manner, when the hand held drill is held such that the bubble reads level, the angle of tilt or inclination of the resulting hole can be readily maintained within one degree. The drill scope can be a U-shaped arm with level that swings over the entire drill housing, a circularly curved surface integrally mounted in the drill housing with a sliding element that holds the level or a calibrated protractor disc with radial support arm and level that attaches to the conventional side handle hole of the drill.

Abstract: A spirit leveling attachment for a power tool which is universally adjustable relative to the tool so as to enable the tool to be located in anyone of a number of selected positions of angularity and maintained in such position by visual reference to the spirit level. A magnetized support member having a partly spherical recess is mounted on the tool. The spirit level is formed with a partly spherical body member which is accommodated in the recess of the magnetized support member, enabling the body member to be magnetically retained in the recess in selected positions of adjustment relative to the support member.

Abstract: An electronic level device characterized by an enclosure, a knob and shaft rotatably coupled to the enclosure, and a mercury switch located within the enclosure and attached to an end portion of the shaft. The mercury switch is closed when it is in a gravitationally normal position, and is open when it is tilted from the gravitational norm by more than a predetermined amount. By rotating the knob, the angle at which the mercury switch closes can be varied. An audible alarm is actuated by the closure of the mercury switch.

Abstract: An improved golf club alignment indicator apparatus, in which a hemispherical bubble level indicator is attached to the handle grip end of the golf club. The indicator is marked with various indicia so as to provide a golfer with the line of aim to the target area, the angle of the club-face relative to the horizontal and the slope of the ground surface upon which the club rests and from which the shot is being played.

Abstract: A leveling attachment for a power tool having an inverted V-shaped block attached to the power tool by an adjustable flexible strap secured to the V-shaped block. The V-shaped block further includes a bifurcated member extending upwardly therefrom having an opening extending therethrough to receive a bolt to which the ends of the strap are affixed and a level having a bracket extending therefrom, the bracket being retained by said bifurcated member and having a central bolt receiving opening so that the level can be fixed in any selected position by tightening the bolt.

Abstract: A drill includes an integrated bi-directional orienting means for leveling the device when in use. The bi-directional orienting means preferably comprises a circular bubble level attached to the butt of the drill. It is relatively easy for the drill operator to level the drill by keeping the bubble in the center of the circular level. A tubular level is separately attached to the top of the drill for guidance in the direction perpendicular to the plane of the circular level. In an alternative embodiment, a tubular level is integrally attached at right angles to the circular level. The liquid filled cavity inside the circular level and tubular level is continuous so that the indicator bubble can travel from the tubular level to the circular level and back again. The apparatus may be adhesively attached to the drill or, the drill may include a cavity for receiving and holding the apparatus.

Abstract: A hair cutting angle indicator for use with scissors or the like as an aid to cutting the hair at a desired angle with respect to the vertical. It includes an angle gauge mounted on an attachment removably mounted on the scissors. In one embodiment, the indicator holds the scissors at an adjustable desired distance from the head whose hair is being cut. In another embodiment, angular indicia are provided about a bar mounted to the handle of the scissors so as to indicate the angle of the cutting direction about the pivot axis of the scissors.

Abstract: A device for indicating the angular movement of a tube bender and the like is disclosed comprising a plate assembly having an alignment groove for attaching, in desired position, the plate to the elongated handle of the tube bender, and wherein the plate assembly has an arcuate spirit level with an angular movement position indicator air bubble inside and has angle marked surface adjacent the arcuate spirit level.

Abstract: A leveling mechanism having bubble levels is removably attachable to a hand-held power drill. In one form, the leveling mechanism includes a drive shaft coupled between the drill and a chuck for rotation therewith. The drive shaft is rotatably mounted to a support, and the support is held stationary relative to the drill housing. The support may include first and second surfaces parallel and perpendicular, respectively, to the axis of rotation of the drive shaft for supporting first and second bubble levels. Alternatively, the support may include a support plate and a level plate hinged thereto for supporting one or more bubble levels; a grooved alignment plate engages the edges of the support plate and level plate for maintaining a predetermined angular relationship therebetween. In another form, the leveling mechanism is removably attached to the front face of the drill housing.

Abstract: Disclosed is a structure of a telescope with compass which indicates the direction in which the telescope is pointed, at the periphery of the field of vision of the telescope. Referring to the compass used for the telescope: a magnet is provided in a compass direction indicating globe on whose outer circumference directions are indicated. This direction indicating globe is supported so as to float in a case containing a lubricating liquid such as oil, etc. This compass is attached to the body of the telescope (specifically, a pair of hand-held binoculars, etc.). Then, the compass direction indication of the direction indicating globe appears as an image at the same focal point as the focal point of the objective lens of the telescope. Referring to other forms of telescopes: the direction indication is especially applicable to a telescope attached to a stand. A gyrocompass fixed to the arms supporting the body tube is connected to a luminous diode or crystalline liquid indication means, etc.

Abstract: A sight for hunting bows possesses an automatic range finding capability when the hunter is stationed at an elevated position and is infinitely adjustable and lockable to facilitate ground level hunting. A greater range of adjustability enables the sight to function properly on various sizes of bows and with various arrow shaft lengths and weights rather than with only a single bow and arrow combination. Greater simplicity of construction of the bow sight is also achieved.

Abstract: A precision comb which has, generally, a one piece molded body portion, including a plurality of comb teeth, and a pendulum pivotally secured to the body portion so that the pendulum normally is vertically disposed when the comb is horizontally disposed. The body portion also has indicia provided on it in operative relationship with the pendulum to visually indicate to the user the angular disposition of the comb during use. The user, therefore, can easily and quickly determine the angle at which the comb is being held, and hence, the angle at which the hair is being trimmed. The comb further has a slot provided in its body portion which is horizontally disposed parallel with the comb teeth. A scissors can be extended through this slot to cut the hair.

Abstract: The handle of a hammer has a recess at the free end and one or more spirit levels are embedded in a plastic filler in the recess. The spirit levels are associated with surface engaging points on the hammer, comprising points on the striking head portion of the hammer or on a side of the head in combination with a bottom or side point at the free end of the handle. Spirit levels, including a bullseye level, are provided to accomplish horizontal leveling in two directions and also in a vertical direction. The bottom surface of the recess is painted a contrasting color for easy viewing of the spirit levels, and interengaging tongues and recess extensions are provided for locking the plastic filler in its recess.

Abstract: A scribing compass and level combination for transferring the contour of one affixed log to another log by drawing a line where the two logs will contact without deviation of the compass from the horizontal or the vertical position.

Abstract: Leveling apparatus for a hand tool such as an electric drill or reciprocating saw is comprised of both a cylindrical bubble level and circular bubble level. The cylindrical bubble level has a longitudinal axis parallel to the working axis of the tool, and thus is utilized for leveling the tool in a horizontal plane. The circular bubble level has an axis passing perpendicularly through its center which is parallel to the working axis of the tool. The circular bubble is utilized for vertically aligning the tool normal to a horizontal datum plane. The bubble of the cylindrical bubble level is viewable from a multiplicity of perspectives. The apparatus may be selectively attached to the drill of different positions on the tool to further improve visibility of the bubble levels. Alternatively, the apparatus is integrated into the housing of the drill.

Abstract: Disclosed herein is a wrench-type hand tool having apparatus for indicating the magnitude of the tightening angle through which the tool is rotated about an axis through a workpiece when applying a torque to the workpiece. The apparatus comprises a gyroscope having a rotor defining a spin axis mounted upon the tool for rotation therewith. The spin axis is oriented substantially transversely to the axis of the workpiece. Means are provided for determining the magnitude of precession of the gyroscope rotor, so that the magnitude of the tightening angle can be indicated as a function of the time integral of the magnitude of precession.

Abstract: An improved device for measuring the tightening angle on a wrench. The directionally fixed member is a liquid body which may include solid particles or a turbine wheel, the relative velocity of which is monitored to determine the relative motion of the liquid with respect to the wrench.

Abstract: The invention relates to an aiming instrument for a small arms weapon comprising an arrangement for directional aiming and an arrangement for vertical aiming, wherein the directional and vertical arrangements are integral and a fixing device is provided to connect them detachably to the barrel of the weapon; the directional aiming arrangement includes an alidade; and the vertical aiming arrangement comprises at least one partially transparent chamber containing at least one movable mass which is displaced opposite a scale.

Abstract: A gravity-activated, electric switch rigidly mountable on any type of tool which is to be used in a precisely accurate position respective to a horizontal or vertical plane includes a sealed cylindrical case having an electric contact at each end, a spherical steel ball activated by gravity to freely roll inside the case for making electrical connection between the contacts, the contacts being located so that the gravity-activated ball makes connection therebetween only when the tool is in a precisely accurate position respective to a horizontal or vertical plane.

Abstract: A leveling device for use in combination with a power tool such as a portable electric drill. The leveling device comprises a pair of levels mounted so that one of the levels indicates deviation from the horizontal of a first datum plane and so that the other level indicates deviation from the horizontal of a second datum plane perpendicular to the first datum plane. The leveling device is mounted on or incorporated into the power tool so that one of the levels indicates deviation of the working axis from the horizontal and so that the other level indicates deviation of the working axis from the vertical.

Abstract: A small, pocket level that can be readily and easily attached to any portable power tool so that the tool is operated on an accurately horizontal and vertical axis; the level including a transparent glass containing a fluid and an air bubble space, the glass being of cross-shape, bowed slightly upwardly at its center so to obtain a level position along two directional axes at right angle to each other; the level being attachable to the tool by a permanent magnet base.

Abstract: An orienting device for a dental facebow which consists of a first gauge and a second gauge which are arranged for pivotal movement with respect to the facebow in planes which are perpendicular to one another. The gauges are of the bubble gauge type, and by pivotal movement each can be arranged in a horizontal attitude, so that the normal attitude of the upper jaw of a patient may be measured and reproduced exteriorly of the mouth of the patient.

Abstract: A tightening wrench with an angle indicator for the final tightening operation on threaded fasteners, the angle indicator having a pointer or other angle indicating element which assumes a given angular orientation under the influence of an ambient force field of gravity or magnetism and maintains this orientation while the wrench is rotated, thereby giving an angular reading of the tightening angle. Gravity is used with a weighted pointer, magnetism with a needle compass or liquid compass. Also usable is a gyro, or a freely rotatable mass of high inertia. The wrench may be a torque wrench.

Abstract: A position indicator to properly incline and set a golf club. The indicator includes a positioning head mounted upon a clamp which is secured to the shaft of a golf club. The positioning head includes a cup carrying a spherical level, a bubble in fluid beneath a spherical glass. The glass is marked to center the level bubble and to indicate direction alignment. The connection between the positioning head and the clamp is essentially a ball and socket joint. A lock screw ties the two components together whenever the position indicator is properly set.

Abstract: A compass, in particular one intended to be used for track finding on skis or in track finding races, which is affixed to the user's hand with a strap, and which compass is eminently convenient to use in said circumstances. The invention is particularly characterized in that the strap, one end of which has been affixed to the compass, passes slidably through an aperture in the base plate of the compass, forming an adjustable thumb loop, and that the part of the strap protruding from the aperture has a length enabling the strap to be wound around the wrist, and that the end portion of the strap can be secured in connection with compass or with the strap by buckle or equivalent so that the compass will be positioned upon the upper edge of the hand, adjacent to the thumb groin. The buckle or equivalent may be attached to the thumb loop.

Abstract: A device adapted for use in the building construction industry for shooting a stud or other fastener into a ceiling in predetermined relation to a known point on a floor below. The device comprises an adjustable telescopic pole with a hanger arm extending laterally from its top. A plumb line, having a plumb bob attached to its lower end, hangs from the outer end of the hanger arm for alignment of the stud gun with the point on the floor and the muzzle of the stud gun may be mounted in direct or offset alignment with the plumb line to facilitate rapid and accurate positioning of the stud gun. Means are provided for vertically aligning the telescopic pole such that the muzzle of the stud gun is in vertical alignment with the plumb line.

Abstract: A drill sight for visually estimating the angle at which an electric hand drill is oriented relative to the surface drilled, the drill sight is mounted to the top of the electric drill and has a tubular casing with a hollow bore with internal wall markings and with a cross hair at one opening. By projecting a line of sight normal to the surface drilled and through the cross hair to a selected wall marking, the orientation of the drill can be determined.