Abstract: An angle finding device particularly in the form of a hammer having a circular or part circular spirit level vial (8) provided with a graduated scale mounted in the hammer head (3). A straight spirit level vial (10, 11) may be positioned across a diameter of the circular vial (8) such that its axis lies at an angle .alpha. to the axis (A) of the shaft. This combination enables the hammer to be used as an angle finding device and a general levelling device when the striking face (6) of the hammer and the end (5) of the shaft are placed against a work surface (W) to be level tested.

Abstract: A masonry level is arranged and configured as an elongate plate, including a planar top surface spaced from and parallel to a planar bottom surface, wherein a U-shaped handle is mounted medially of the top surface extending orthogonally and upwardly thereof having a first spirit level positioned within the handle to the top surface, with second and third spirit levels orthogonally oriented relative to the first spirit level and parallel relative to one another arranged to provide for a planar top surface in the leveling of masonry block and brick. A modification of the invention includes impact structure arranged to enhance ease of manipulation of underlying masonry workpieces.

Abstract: A post level is defined by a pair of right-angle walls. A horizontal bubble vial is mounted in each wall, and a vertical bubble vial is mounted at the intersection of the walls. The vials are mounted in the interior of a pair of spaced protrusions formed in each wall, which define internal structure engaging and cradling an end of the vial without positively retaining the vial within the protrusion. The protrusions open onto the inner surface of the walls, and a retainer plate is positioned over the opening of the protrusions to retain the vials within the interior of the protrusions. The retainer plate is light-reflective to enhance visibility of the vial bubble.

Abstract: A system for automatically orienting a cylinder head such that a valve guide inserted into a guide is perpendicular to the ground.

Abstract: An electronically operated level apparatus and method to allow the slope of a surface to be easily measured. The apparatus includes a hermetically sealed bladder partially filled with an electrically conductive liquid and partially filled with a gas. The electrically conductive liquid is free to align itself within the bladder in response to the incline of a surface. Current probes placed within the hermetically sealed bladder measure the electrical resistance of the electrically conductive liquid, and electronic circuitry converts this measured resistance into an electrical signal having an amplitude proportional to slope. Electronic circuitry is included to minimize the current drawn from the electronic components while the level is not in use. Other electronic circuitry prevents the level from operating when it is placed in an orientation which is inconsistent with its ability to sense slope.

Abstract: The composite level consists of an I-shape aluminum frame having ribbed or working surfaces and a pair of one-piece plastic cover plates integrally formed with end plates secured to the frame. A plurality of measuring vials are supported by the frame and retained by the cover plates. The alignment between the plastic cover plates and the metal frame is provided by an indexing system that minimizes the deleterious effect of the shrinkage of the plastic material of the cover plates during the curing process on the fit between the cover plate and frame. The use of the plastic cover plates and the ribbed working surfaces of the aluminum frame eliminate the necessity of painting and milling the level.

Abstract: A clinometer releasably securable to a golf club head to indicate its loft and to detect its lie. The clinometer has a sector shape and its circumferential extent is sixty degrees of arc. An arcuate bubble tube having accompanying indicia to indicate differing angular orientations of a club head face is secured to the arcuate top wall of the device and a straight bubble tube extends horizontally from a flat sector shaped wall to show the lie of the club head.

Abstract: An apparatus for indicating and proper positioning of a post, including a first and second spirit level member, with a first elastic band securing the first and second spirit level together, and a second elastic band directed exteriorly of the second spirit level member, including a loop securable to a hook mounted to the first spirit level member to encompass a post. The elastic bands each include flexible magnetic members mounted coextensively with the elastic bands, and further including apertures directed through the first and second bands to receive fasteners, such as nails, to selectively mount the organization to the post by utilization of fasteners, magnetic attraction, or frictional elastic encompassing of an associated post.

Abstract: A spirit level assembly attachable to a free end of a pipe section being installed includes a housing block of generally rectangular cross-section in which a series of viewing ports are formed through opposed side walls thereof. Fitted into each of the viewing ports is a spirit level vial or bubble. Integrally formed on the opposed ends of the housing block are cylindrical stubs of predetermined diameter corresponding to commonly encountered pipe sizes. The stubs are threaded in accordance with the National Pipe Thread convention. When the housing is screwed onto the length of pipe being leveled or plumbed, an appropriate bubble vial can be viewed to establish the desired horizontal or vertical orientation of that pipe segment.

Abstract: A picture frame leveling tool includes an elongate, generally "L" shaped body formed with a horizontal and vertical defined leg defining a notch within the legs to accept a picture frame therewithin. Upper and lower visual level indicators enable alignment of the picture frame relative to a support wall surface. The organization optionally includes a friction cushion layer laminated to an interior surface of the horizontal leg to provide enhanced frictional engagement with the picture frame, and may further include capturing brackets slidably mounted to a rear vertical surface of the horizontal leg of the body to secure a picture frame within the notch during a leveling procedure.

Abstract: An extensible carpenter's level includes a pair of body members in end-to-end relationship and a pair of extenders mounted in face-to-face relationship on the body members. The extenders are slideably retained in tracks on the body members. The body members have longitudinal slots and the extenders have locking means passing from the extenders through the longitudinal slots on the body members for locking the body members and extenders into relative position. The body members, and preferably also the extenders, have level indicating means thereon, and are separable from the device as a whole for convenient individual use. When assembled, the body members can be slided apart to accommodate a desired length within a span up to about twelve feet, the reference edges of the body members remaining co-linear at any extension length.

Abstract: The liquid indicating leveling device consists of a modular unit having four walls each at 90.degree. to one another, the inside surfaces of the walls having a flat non-reflective white surface together with a white back wall and having an open viewing front defining a viewing chamber. The bubble vial is disposed in the viewing chamber parallel to the bottom wall of the viewing chamber so that the vial may be viewed through the open front for both vertical and horizontal leveling. Illumination is provided for selectively maintaining the light level within the viewing chamber at a level sufficiently above ambient for taking a bubble reading without glare or reflections from outside elements. A beam is provided in which the modular unit is mounted to increase the accuracy of the unit over a greater length for more accurate readings. A cross bubble device is provided for taking both vertical and horizontal readings.

Abstract: An apparatus for measuring an angle has a first planar bar member upon the edges of which are inscribed reciprocal angular scales corresponding to the tangent of an angle established by the position of the apparatus. A sliding measurement bar is maintained in substantially perpendicular relationship by an interlocking tongue and groove joint, and has an indicator for reading the set angle against the two planar scales. The tongue and groove joint and the two scales permit the apparatus to be constructed as a flat based planar device for both measuring an angle and transferring the measured angle from a physical object to a blue print or drawing of the object measured. Perpendicular spirit levels are placed in the sliding bar to allow the angle measuring device to be used with respect to horizontal or vertical positions for measuring the angle of actual physical construction such as beams or pipes.

Abstract: An elongated hollow body of transparent material is provided and defines a closed cavity therein including a first elongated portion extending transversely of one end of the body, a second elongated portion disposed adjacent and at a 45.degree. angle relative to the other end of the body and a third elongated portion extending along the body and communicating corresponding ends of the first and second cavity portions. A quantity of liquid and a gas bubble fill the cavity and the cavity walls include first, second and third partial cylindrical wall portions spaced closely inwardly of first and second end surfaces and a longitudinal side surface of the body. The first and second end surfaces are disposed at 90.degree. and 45.degree. relative to the longitudinal side surface of the body and each of the surfaces includes indicia thereon defining the central area of the corresponding cavity wall portion in which the bubble may be seated.

Abstract: A level for leveling in three dimensions such as leveling the top surface and corner edges of a wall. The level has a body that is L-shaped in cross section with two legs at right angles to one another. The legs are made of plate like members with equally spaced holes. Some of the holes have level vials in them. Each leg has a longitudinally extending rib. The vials are supported in rings fixed to the sides of the plate like legs. The rings could be fixed in position by set screws or other fastening means. The ribs are at least as thick as the rings so that they protect the rings and the vials supported in the rings.

Abstract: A two plane assembly (100) having a first, substantially horizontal plane (140), and a second plane (160) at a compound angle with respect to the first plane, is mounted to a reference surface (112), established by optical or other suitable means. An inclinometer pair (146, 148; 170, 172) is affixed to each plane, with each inclinometer of a pair disposed orthogonally with respect to the other. The values from the inclinometers are recorded and the assembly is then mounted to a platform to be aligned. The pitch, roll and azimuth of the platform is adjusted such that the output from each inclinometer agrees with its recorded value, thereby accomplishing platform alignment.

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.