Abstract: An extendible or adjustable length level is provided. The level includes a locking mechanism allowing the user to fix the level at a selected or desired level. The locking system allows the user to lock the level at the desired length and provides more effective and robust locking than conventional expanding levels. In some embodiments, the locking mechanism is designed such that translational movement of the user-actuated control (as opposed to rotational motion) is used to move the locking mechanism into the locked position.

Abstract: A leveling assembly including a levelling bit with a first portion that engages a screw head of a levelling screw in a base of a gondola assembly and a second portion that countersinks around a portion of the leveling screw. The levelling assembly further includes an alignment measuring system configured to measure alignment of slots in the gondola assembly. The alignment measuring system includes a first bar attached to a retractable cord and a second bar movable along the cord. The first bar is shaped for insertion into a first slot of a first upright and the second bar is shaped for insertion into a second slot of a second upright. The cord is shaped to extend along a face of a third upright between the first and second upright when the first bar is inserted into the first slot and the second bar is inserted into the second slot.

Abstract: A level includes a level body having top, bottom and side walls, and a window that opens into the interior of the body. A vial is positioned within the window. The vial is carried by, and rotatable relative to, a vial mount. The vial mount and the level body include engagement structure that fixes the vial mount against movement relative to the level body. Securing members, such as screws, are movably carried by the vial mount, and are engageable with the vial in order to selectively adjust the angular position of the vial relative to the level body and to selectively fix the angular position of the vial relative to the vial mount, and thereby relative to the level body.

Abstract: A bubble type level for determining the orientation of a structure, such as an elongate pipe, that includes several differently oriented bubble vials that are secured within the level body in a manner such that if the bubble vials become broken or otherwise damaged, they can be easily replaced and the level need not be discarded. The bubble type level of the invention also includes a body portion having top and bottom rails that are chamfered in a manner to automatically align the level with the longitudinal axis of the pipe when the level is connected to the side of the pipe. The level further includes a plurality of longitudinally spaced magnets that are connected to the bottom rail of the level and can be used to releasably interconnect the level with a length of ferrous pipe.

Abstract: A combination level/try square includes an elongated body with an arm at one end thereof. The arm is rotatable between a non-use position against the body and a use position in which the body and the arm define a try square. The body incorporates three indicators, namely a plumb indicator, a level indicator and a slope indicator. In a second embodiment, a laser pointer is provided on one end of the body.

Abstract: A construction level with modular detachable sections is herein disclosed. In its detached state, the level resembles a conventional two-foot level with the typical three bubble vials indicating levelness at angles of zero degrees (0°), forty-five degrees (45°), and ninety degrees (90°). If levelness over a larger distance is required, one (1) or both detachable end portions of the level are attached using sliding joints thus allowing the device to extend to a four (4) foot length. The attaching joints allow for the extension without a loss of accuracy. Each end piece has its own bubble vial to verify levelness at any point along the device. In such a manner, the device may also be used as a one-foot torpedo level. The use of the modular construction level allows for the accuracy and precision of a long level with the convenience and usability of a shorter level.

Abstract: A combination level/try square includes an elongated body with an arm at one end thereof. The arm is rotatable between a non-use position against the body and a use position in which the body and the arm define a try square. The body incorporates three indicators, namely a plumb indicator, a level indicator and a slope indicator. In a second embodiment, a laser pointer is provided on one end of the body.

Abstract: An instrument for ascertaining whether a surface is horizontal, vertical, or at a 45* angle, consisting essentially of an encased, liquid-filled tube containing an air bubble that moves to a center window when the instrument is set on an even plane. Also called a spirit level. A box level including an elongate body, plumb and level vials, and spaced handholds having outer edges together defining first and second parallel application planes beyond first and second face planes of the elongate body.

Abstract: A level includes a body having first and second arms attached to each other for relative pivotal movement about a pivot axis between open and closed positions. The level also includes a bubble vial mounted to the body and having a longitudinal axis coaxial with the pivot axis. Movement of the arms from their closed position to their open position exposes a measurement portion of the first bubble vial for use. Movement of the arms from their open position to their closed position shields the measurement portion of the first bubble vial within the body to protect the bubble vial from damage during storage.

Abstract: A level having a mounting body provided with a bubble tube measuring portion disposed in a container case, the mounting body is adjusted by microrotation in relation to the container case to correct a position of the bubble tube, wherein a shaft insertion hole is provided in the container case and in the mounting body, the shaft member is disposed via the through-hole of the container case and the mounting body, whereby the mounting body can perform microrotations about the shaft member in the container case, the mounting body is provided with an elastic pressure contact portion for making elastic pressure contact with an inner surface of one side of the container case, and a tightening and pressing contact portion for making pressing contact via an adjustment screw for pressing and making contact in a sloped direction with the inner surface on an opposite side facing the container case.

Abstract: A molded plastic yet structurally rigid tool, such as a level, with a web extending in a generally undulating configuration. The undulating configuration of the web acts to strengthen and make the level more rigid when compared to a level with a planar web. The undulating configuration of the web is substantially symmetrical about the centerline of the level over its entire length, but may also be arranged in a number of non-planar embodiments.

Abstract: A multi plane plumb level includes an elongated rigid frame having an X shaped cross section having four walls that are rigidly joined along an elongated central portion of the X shaped cross section and extend outward from the elongated central portion of the X shaped cross section and six level indicating bubble vials that are mounted on front and back sides of the frame in opposing pairs. A pair of flip out transversely oriented bubble vials rotates from secured positions within the front and back sides to extended positions, forming extensions of frame walls to facilitate the leveling of posts, pipes and edges. The remaining two pairs of bubble vials provide level measurements in the longitudinal direction and at a 45 degree angle.

Abstract: A new level for determining whether surfaces are level and plumb. The inventive device includes an elongate main member and a elongate insertion member. The main member has first and second ends, and top and bottom faces. The top face of the main member has an hole therein. A first bubble vial is provided in the hole of the top face of the main member. The elongate insertion member has first and second ends, and top and bottom faces. The top face of the insertion member has an hole therein. A second bubble vial is provided in the hole of the top face of the insertion member. The second end of the insertion member is slidably received by the first end of the main member. The insertion member is biased away from the second end of the main member in a direction along the longitudinal axis of the main member.

Abstract: A spirit level with a pair of elongate arms which are pivotable relative to each other about a pivot axis and which have a measuring device, for being placed on a plane and for detecting an inclination thereof, wherein each of the arms has a first and a second longitudinal portion with a bend portion connecting same, a longitudinal axis of the first longitudinal portion of each arm extended in a direction parallel to a longitudinal axis of the associated second longitudinal portion. The pivot axis extends in the regions of the bend portion of the arms. The first longitudinal portions of the two arms are of a substantially equal first length and the second longitudinal portions of the two arms are of a substantially equal second length.

Abstract: A golf training aide is attached to a golf club shaft and visually indicates to the golfer when the club shaft is held in a vertical plane and when the club head is held in proper angular relation to the ground. An indication of vertical alignment of the shaft is given when a first bubble is centered in a first bubble tube member and an indication of proper club head position is given when a second bubble is centered in a second bubble tube member. In a first embodiment, the second bubble tube member is linear-in-configuration and is rotatable about a horizontal axis. In a second embodiment, the second bubble tube member is arcuate-in-configuration and has a fixed 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 wheeled vehicle level has adjustable longitudinal and lateral level indicators, with the lateral level indicator further pivotable in response to a cam ring of a rotatable cap. The cap has numbers to indicate the amount by which a wheel should be raised to level the vehicle. Nestable wheel lifts accompany the level for raising the wheel. A method is shown for using the level in conjunction with the wheel lifts.

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.