Abstract: The present invention is a new multipurpose speed square that is easily utilized by any workman who typically requires a means for measuring, aligning, leveling, etc. The speed square is multi-functional, of simple construction, lightweight and portable. The speed square can be easily carried as an all-in-one tool and thus eliminates the need for additional tools, or the like. The speed square that can be manufactured from substantially any suitable material of engineering choice, is cost effective to produce, manufacture, easily marketed and easily sold.

Abstract: An improvement in workpiece-engageable devices for accurate workpiece angular formation including a plurality of spirit vials and an engager of a workpiece which establishes an intended bending plane. The plurality of spirit vials includes formation-angle vials adjacent to one another and supported in a respective plane parallel to the intended bending plane and in an orientation corresponding to a respective one of intended angles with respect to a base plane. At least one control vial is supported in a body of the device and aligned in a plane parallel to the base plane. The formation-angle vials may include four formation-angle vials each oriented at one of angles 10°, 22.5°, 30°, 45°, 90° and in some embodiments 60° with respect to the base plane.

Abstract: A hook-up memory gauge (10), is a convenient aid in the vertical hitching alignment of a trailer with a tow vehicle. The hook-up gauge is mounted on the side of the trailer near the support legs or support stand so as to provide a settable reminder of the trailer fore-and-aft tilt angle at vehicle disengagement. The device comprises an arcuate spirit vial (38) with a small air bubble, and a squeeze-and-slide pointer (24) for recording tilt angle. For this embodiment, the hook-up gauge is capable of measuring five degrees of tilt angle in either direction. A glass or plastic spirit vial is fastened in a cradle which is part of a mounting base of thermosettable material or metal. The squeeze pointer is slidably mounted in arcuate guide slots on either side of the spirit vial. A slight clearance from the vial is provided so it can easily be moved in the elongate direction for centering over the air bubble.

Abstract: An adjustable level having an angled base with legs extending normal to one another from a common edge and with magnets spaced along and extending fully through each leg; an L-shaped bracket having at least one bubble housing fixed to a leg thereof; a post extending from the base and through a hole in the bracket; a spring on the post and between a head on the post and the bracket to bias the bracket towards the base and to thereby engage ribs on the bracket into grooves on the base; and a retainer for retaining the level to objects, including a flexible cord connected to a return spring and a loop and hook to secure the cord in a pulled out condition surrounding an object.

Abstract: A multi-function spirit-level adapted for use as inclination indicators for different specific slopes comprising a central conventional spirit level bubble tube attached at each distal end to a rectangular member with no support or other structure therebetween. The rectangular members are positioned normal to the central bubble tube. One of the rectangular members has a greater surface area than the other. The rectangular members are positioned at the ends of the bubble tube so that their four narrow outer surfaces are parallel. The bubble tube is centered on one of the rectangle members and positioned off center on the other. The offset position of one end of the bubble tube allows the spirit level to measure four different slope angles by resting the rectangular members on each of their four different outer parallel surfaces.

Abstract: The present invention relates to an improved leveling device for use with various tools or other objects during a construction or repair process. A bubble level is mounted along the straight edge of a semi-circular protractor. The protractor is movably connected to a base member and adapted to pivot thereon relative to a central axis extending through the base member. A detent mechanism is provided within the base member for maintaining the protractor at various angular settings. The base member is also adapted to rotate about the central axis and may be easily and quickly attached to or removed from the protractor bubble level as well as various types of work surfaces including wood and metal.

Abstract: The spirit level, for use by carpenters, bricklayers or the like has a body comprising an elongate extrusion with at least one flat supporting edge 3. An outer rotatable member 10 is rotatably mounted in a transverse circular aperture in the elongate extrusion, and an inner rotatable member 11 is rotatably mounted in a transverse circular aperture in the outer rotatable member and coaxial therewith. A bubble tube 14 is secured to the inner rotatable member in fixed orientation relative thereto, such that rotation of the inner rotatable member effects coarse rotation of the bubble tube and rotation of the outer rotatable member (together with the inner rotatable member) effects fine rotation of the bubble tube. The angle can be measured by placing edge 3 on a test surface, successively rotating inner member 11 and outer member 10, and reading off the resulting angles on coarse scale 19 and fine scale 24.

Abstract: An adjustable spirit level having a plurality of spirit levels therein. A first spirit level measures vertical orientation, a second adjustable spirit level is adjustable to a true horizontal position, and a third spirit level is adjustable to any desired position between vertical and horizontal. The second level may be adjusted with a rotatable cam-shaped end piece secured within the level body, while the third level is ratcheted to a predetermined angle. The third level may be held in place by a spring member biasing the level against the level body.

Abstract: A combination plumb/level device for removable attachment to a try square of magnetizable material to enable the square to be used as a level or a plumb. The device comprises a spirit level, and a holder for the level. The holder has a magnet associated therewith for magnetically gripping one face of a standard, unaltered leg of the try square with the level oriented relative to the face. The magnet associated with the holder is engageable with an edge of the standard, unaltered leg and orients the level with respect to the edge, enabling flatwise application of the other face and edges of the try square to a surface whereby the try square may be used to ascertain level or plumb positions. Other embodiments, including those directed to a device adapted for removable attachment to a try square of non-magnetizable material, are also disclosed.

Abstract: A water level or spirit level having at least one water level member whose angular adjustment relative to the contact surface can be changed. The water level member is rotatably mounted on the level body or a structural part fixedly connected to the level body. The water level member is fixable in the desired angular position relative to the level body or the structural parts connected to the level body. The rotatable water level member has at least one circumferentially extending flange which engages under a clamping jaw. The clamping jaw can be pressed against the surface of the flange by means of a manually operated clamping member.

Abstract: A pitch and angle measuring instrument including three basic elements; a base, a main dial and an elongated pointer. The base includes a bottom portion which is designed to rest on a pipe or other item for which the angle or pitch is desired to be measured. An upper portion extends upward from the lower portion and has a first calibrated scale thereon. The main dial member is rotatedly affixed to the base and extends upward therefrom. A second calibrated scale is located on the main dial member. The elongated pointer is also rotatively connected to the base about the same pivot point as the main dial member. The pointer includes a level indicator. The first and second calibrated scales are arcuate having the same center point. However, the radius of the arc formed by the second scale is greater than the radius of the arc formed by the first scale. The pointer includes means to indicate a reading on both of the scales when the level indicator is at a level position.

Abstract: A level containing horizontal, vertical and rotatable bubble capsules is constructed using only two different housing parts. The main housing is comprised of two identical halves secured back to back. A cylindrical chamber which houses the rotatable bubble is also comprised of two identical halves secured back to back. The structure is simple and economical to produce.

Abstract: A level formed by a frame having opposing longitudinal working surfaces and a transverse opening in the frame supporting a ring assembly for angular rotation in a longitudinal plane of the frame. A spheroid vial containing a bubble indicator is supported by the ring assembly with its major axis extending diametrically across the inner periphery of the ring assembly to register a level position when the major axis of the vial is disposed in a horizontal plane. Angle indicating indicia is scored on the surface of plates abutting opposing sides of the frame and maintaining the ring assembly within the frame opening for indicating selective angular alignment of the major axis of the vial with respect to the plane of the working surface whereby preselected orientation of the vial with the angle indicia indicates a preselected angular relationship of the vial major axis and a working surface when the working surface is in contact with the surface being measured.

Abstract: A level mechanism, and a method of utilization thereof, are disclosed that provide for completely accurate angular placement of workpieces in operative association with the machine tool in a simple manner, even if the machine tool work surface is not itself level. A frame is provided having an elongated straight edge portion, a spirit level tube, a first annular member having first indicia formed thereon, and a second annular member having second indicia formed thereon. Actuators are associated with each of the annular members.

Abstract: A level indicating instrument permitting simultaneous reading in two horizontal and/or vertical planes, one of which planes may be preset to any desired deviation from the horizontal. A pair of straight-edges perpendicular to each other along their long axis are coupled to a bubble indicator of the bull's-eye type. The bubble indicator may be rotated relative to the straight edges and set to indicate vertically or horizontally or any desired preset angle between vertical and horizontal.

Abstract: A level comprises a frame including a working surface, a level vial containing bubble indicating means and having bubble registry means adapted to register a level position when the longitudinal axis of the vial is positioned in a horizontal plane, and selectively adjustable mounting means for adjustably mounting the level vial to the frame for variable, selective angular alignment of the longitudinal axis thereof with respect to the plane of the working surface whereby the preselected orientation of the bubble indicating means with the register means of the level vial indicates a pre-selected angular relationship of the longitudinal vial axis and the working surface when the working surface is in contact with a surface being measured.

Abstract: An alignment gauge for use in determining whether two elongated members, such as cylindrical rolls, are in parallel relationship. The gauge includes a rod or standard, and a pad is connected to a micrometer and is mounted for lateral movement with respect to the rod. A level having a bubble-containing vial is mounted for pivotal movement with respect to the rod. In operation, the rod is placed tangentially against one of two generally parallel rolls and the pad is placed tangentially against the other of the rolls. The level is then pivoted until the vial is horizontal. The gauge is then positioned in the same manner at the opposite ends of the rolls and the micrometer is adjusted until the vial is horizontal or level. The reading of the micrometer is an indication of the misalignment of the two rolls.

Abstract: An aiming bar is inserted through the aiming slit of an aircraft visual approach slope indicator housing and secured at its inner end to a cross bar in front of a horizontal row of landing lights so that the aiming bar assumes the vertical angle of the upwardly directed light beam. A pivot bar is mounted on the aiming bar and aligned with an angle plate mounted on the aiming bar to indicate the slope of the approach indicator.The alignment assembly is calibrated using a T-shaped calibration bar positioned in a rigid carrying case. A pin at each end of the T-cross arm and at the remote end of the T-leg rests on respective mounting pedestals whereby the calibration bar is held in a raised position and leveled by adjustment of at least two of the pins to provide a horizontal platform for mounting the alignment assembly. The aiming bar is horizontally mounted on the T-leg and the pivot bar is set to a horizontal angle plate reading.