Abstract: A chalk line marker is releasably connectable to a level. When connected to the level, the chalk line marker is employed to provide chalk marks in orientations established by the level. When the chalk line marker is removed from the level, the level and chalk line marker can be used independently in conventional fashion.

Abstract: A spirit level which includes an easy to operate, built in stamping mechanism that can be used by the individual user to mark a level line on a surface located adjacent the spirit level, such as a wall against which the level is engaged. The spirit level includes a plurality of conveniently located push pads that can be operated by the user to move a pre-inked stamping member from a normally retracted positioned into an extended marking position in engagement with a surface to be marked if desired.

Abstract: A square that includes two rigid, channeled members having an interior and an exterior, with the two members being joined at a ninety-degree angle to form a one-piece L-shaped tool having an elbow and a notch disposed on an exterior corner opposite the elbow. The invention also features a bubble level attached to the exterior of each member and a releasable adhesive member disposed upon the interior of each member, such as magnets, tapes, or adhesive plastic materials. Methods for pipe-fitting and for holding pipes or joints in place with the invention are also provided.

Abstract: A water or spirit level is composed of an elongated body, preferably of metal, at least one bubble mounted in the elongated body, and end caps, preferably of plastics material, at the end faces of the elongated body, wherein at least one outer surface of the elongated body constitutes a preferred measuring surface. At least one of the end caps is releasably connected to the level body such that the end cap can optionally be removed and once again replaced.

Abstract: A device and method for a straightedge with a handle and a level are provided. The device includes a rectangular body having at least one flat edge surface; a handle adapted to engage the rectangular body; and at least one leveling vial mounted to the handle. The vial indicates whether the at least one flat edge surface of the rectangular body is level against a planar surface when the handle is engaged with the rectangular body. The method of leveling or measuring includes the steps of providing a rectangular body having at least one flat edge surface, providing a handle adapted to fit with the rectangular body, the handle having at least one leveling vial mounted thereto, and removably engaging the body to the handle.

Abstract: A hand-held system for determining the slope of an element having an irregular surface, such as a shingled roof, or along a surface that is partially obscured by adjacent elements. The system comprises an inclinometer having a double indicator to provide two simultaneous readings of slope.

Abstract: Disclosed herein is a level comprising a horizontal component comprising a first terminal end and a second terminal end; a first vertical component comprising an end joined to the first terminal end of the horizontal component, wherein the first vertical component is attachable to a first vertical side of a jamb; and a second vertical component comprising an end joined to the second terminal end of the horizontal component, wherein the second vertical component is attachable to a second vertical side of a jamb; wherein the level squares, levels, and plumbs the jamb. Further disclosed herein is an assembly comprising two levels disposed on a jamb such that the sides of the jamb are held rigid and secure, and the angles of the jamb are held at a constant angle to increase the ease of installation of the jamb.

Abstract: A spirit level has a body member containing a leveling tube, in which the base of the body member has a width greater than the width of the body member in any other plane parallel with the base. Preferably the body member is triangular in cross section and may include three elongate wing or flange members extending radially from a central hub region. The body member may have axially-extending, for example telescopic, end members.

Abstract: An apparatus for determining a level surface includes a housing having a plurality of apertures and a power supply source disposed therein. A plurality of laser beam supply sources are operably controlled by the plurality of switches. A plurality of reflecting members spaced from the plurality of laser beam supply sources and receive a plurality of laser beams having respective first paths and reflect same away in corresponding second paths. A plurality of angle-adjusting members receive the plurality of laser beams and direct same along a third path and out of the housing via the plurality of apertures, respectively. A plurality of control dials are operably connected to the plurality of angle-adjusting members for positioning same to thereby establish the respective third angles of the plurality of laser beams. A plurality of leveling devices are attached to the housing and help position the apparatus at a substantially level position.

Abstract: A bricklayer's combination level and plumb having a first I-section beam, a second I-section beam, and a connector pivotally and slidably connecting the second I-section beam to the first I-section beam wherein the second I-section is angularly displaceable up to and including a right angle relative to the first I-section beam.

Abstract: An improved tool is provided for locating the corner or edge of a workpiece while setting the workpiece at a desired angle with respect to a work surface. An elongated arm member slidably engages an elongated base member at one end, allowing for the measurement of the distance between the opposite end portions of the arm and base member and calculation of the angle at which the workpiece is disposed. The base member is provided with generally opposing first and second mating surfaces for locating the corner or edge of the workpiece. Different embodiments are provided for use in finding edges of workpieces having various angles. Different embodiments further provide for the use of multiple measuring instrumentalities and calculations.

Abstract: A picture alignment and hanging device for aiding in the locating and marking of positions for a hook or nail on a wall for placing a picture or mirror thereon including an elongated vertical member having an alignment hole positioned therein and an attachment end located on a bottom end thereof. The vertical member includes a hook member formed on a front portion thereof for receiving and supporting a wire or hanger attached to a picture to be hung. On the back portion of the vertical member there are formed marking element receiving recesses for receiving a marking element such as a thumbtack, push-pin, or specially designed writing implement in a secure, yet removable, fashion for marking a wall on which a picture is to be hung.

Abstract: An angle measuring and level combination device includes an elongated member having a first end, a second end, a top side, a bottom side, a first lateral side and a second lateral side. The elongated member has a length from the first end to the second end greater than three feet. An angle indicating assembly is mounted in a circular opening in the elongated member and is positioned generally between the first and second ends. The angle indicating assembly is viewable on each of the first and second lateral sides. Angle indicia are positioned on the first lateral side and extending around the opening. The angle indicia are zeroed along a line orientated perpendicular to the top and bottom sides.

Abstract: A multi-function layout square of modular construction having a laser that is capable of performing multiple functions is disclosed. The multi-function square has a metallic outer casing with magnetic properties, with a protractor plate slidably, pivotally, and removably attached by thumbscrews to the casing that can be moved and rotated with respect to the casing and slid linearly along a portion of the length of the casing. When the protractor plate is removed the casing may be used as a level, a plumb bob, a ruler, and a compass. When the protractor plate is attached the tool may be used as a framing square, roofing framing square or rafter square, and a gauge or scribe for straight lines, arcs, or circles. The laser, a switch, and a pair of bubble level vials are contained in a module installed at one end of the casing, and a second module containing batteries is removably installed at the other end of the casing.

Abstract: A spirit level comprising a body having a level face for setting a surface, at least one bubble vial mounted in the body, the bubble vial having a longitudinal axis generally perpendicular to the level face, and an optical transfer element fixed to the body which transfers an image of the bubble vial to a viewing plane generally parallel to the level face.

Abstract: A device and method for a straightedge with a handle and a level are provided. The device includes a rectangular body having at least one flat edge surface; a handle adapted to engage the rectangular body; and at least one leveling vial mounted to the handle. The vial indicates whether the at least one flat edge surface of the rectangular body is level against a planar surface when the handle is engaged with the rectangular body. The method of leveling or measuring includes the steps of providing a rectangular body having at least one flat edge surface, providing a handle adapted to fit with the rectangular body, the handle having at least one leveling vial mounted thereto, and removably engaging the body to the handle.

Abstract: A ganging tool for adjusting the position of a pair of ganged wiring devices such as duplex receptacles, toggle, and decorator type switches on a mounting, e.g., an electrical box. The ganging tool has a frame having a pair of apertures for receiving different kinds of wiring devices and holding them in place while the ganging tool adjusts the position of the wiring devices. The ganging tool also has rotatable toggle adaptors that allow the ganging tool to be used to position both toggle type wiring devices and non-toggle type wiring devices. The ganging tool further has a leveling means for determining the level of the wiring devices. Also, tool cutouts on the frame of the ganging tool allow the ganging tool to be used with power tools in conjunction with positioning and affixing wiring devices on a mounting.

Abstract: An improved tool comprising a carpenter's combined level and square includes: (a) a first elongated, straight section having distal and proximate ends and a centerline therebetween, with the proximate end having a flat surface whose upper part forms a 45 degree angle with the section's centerline, (b) a first leveling bubble fixed in this first section, (c) a second elongated, straight section having distal and proximate ends and a centerline therebetween, with the proximate end having a flat surface whose upper part forms a 135 degree angle with the section's centerline, and with the second section proximate end being proximate the first section proximate end, (d) a second leveling bubble fixed in this second section, (e) a coupling means having a bottom portion that is connected to the first section proximate end and a top portion that is connected to the second section proximate end and a connecting rod that is configured so as to connect these portions and allow them to independently rotate

Abstract: A level comprises an extruded thin wall frame structure having an opening of I-shaped configuration extending from end to end thereof. The thin wall frame structure includes a pair of elongated operative walls each having a pair of transversely spaced inwardly turned flanges defining the width thereof and an exterior operative surface extending between the flanges thereof. The operative surfaces are planar and parallel. A pair of angular walls extend from each pair of spaced flanges in converging relation with one another and a pair of central walls are spaced apart in the direction of the width of the operative walls a distance less than the width of the operative walls and integrally interconnected between the pairs of angular walls extending from the flanges. The operative walls and the central walls having a plurality of wall openings therein. An end member closes the opening at each end of the thin wall frame structure.

Abstract: A multi-use tool containing a tape measure, with tape lock, a laser device, a pencil sharpener, level indicators, a pencil holder, a storage compartment, a laser on-off switch, and a rotatable straight edge. The tool can be easily carried by utilizing its ergonomic handle.

Abstract: A laser level with lens switching mechanism includes a shell, a level vial fitted to top of the shell, a laser module disposed in the shell, a connecting base joined to the front end of the shell, and a lens switching knob joined to the base; the connecting base has a first hole right in front of a passage formed in the shell for allowing laser light of the laser module to travel through; the base has a second hole, and locating protrusions spaced apart around the second hole on a front side; the knob has different lenses fitted around a shaft thereof, and is rotary with the shaft being passed through the second hole of the base; the knob has cavities, which fit with the locating protrusions when either one of the lenses is aligned with the passage for laser light.

Abstract: A spirit level comprising a body having a level face for setting a surface, at least one bubble vial mounted in the body, the bubble vial having a longitudinal axis generally perpendicular to the level face, and an optical transfer element fixed to the body which transfers an image of the bubble vial to a viewing plane generally parallel to the level face.

Abstract: The invention is a masonry tool that is a framing square with a retractable straightedge, where the framing square can be fitted to a level. The major components of the invention are a foldable flat straightedge, a mounting bar and housing which seats a notched disk that rotates on an axial shaft that is joined to the straightedge, a finger activated switch that moves a spring loaded slideable pin that clicks into a notch on the disk corresponding to an angle, and fastening components and elements for longitudinally affixing the mounting bar and housing to the end of the level. The retractable straightedge, when unlocked, can be rotated from a retracted position to a reversibly locked right angle position, and vice versa.

Abstract: The present invention relates to a device for use in marking a point on a wall where a fastener should be installed in order to hang an object at a desired location on the wall. A device according to the invention includes an elongate frame having an elongate slot. The frame is adapted to be positioned adjacent to a back surface of the object to be hung. The device further includes a ledge projecting from the frame. The ledge is adapted to be positioned in contact with a top surface of the object. The device also includes a carriage that is supported by the frame. The carriage is adapted for reciprocating movement along the slot. The device further includes a pin that is carried by the carriage. The pin terminates on a first end in a stylus that extends in a direction away from the back surface of the object when the frame is positioned adjacent thereto. The device also includes a plurality of hooks that are carried by the carriage. The hooks are disposed at predetermined distances below the stylus.

Abstract: A level comprises a frame defining first and second parallel channels and first and second rails fitted slidingly in the first and second channels respectively. The level is adjustable in length by sliding the rails in the respective channels of the frame.

Abstract: A laser beam irradiation device, comprising a light source for emitting a laser beam, a cylindrical lens, an optical system for entering the laser beam to the cylindrical lens perpendicularly with respect to a center line of the cylindrical lens, and a luminous flux rotating means for rotating the incident laser beam around an optical axis of the laser beam.

Abstract: A combined chalk line and articulated level device (10) including a base member (20) having an enlarged vertical mounting face (22) that is fixedly connected to a conventional chalk line dispensing member (30) having a quantity of chalk line (31) that is releasably engagable with an articulated level unit (13) including a bubble level member (40) affixed to a mounting plate element (41) that is pivotally connected to the base member (20) and operatively associated with a roller bobbin (48) to maintain a portion of the quantity of chalk line (31) parallel to the longitudinal axis of the bubble level member (40).

Abstract: A level comprises an extruded thin wall frame structure having an opening of I-shaped configuration extending from end to end thereof. The thin wall frame structure includes a pair of elongated operative walls each having a pair of transversely spaced inwardly turned flanges defining the width thereof and an exterior operative surface extending between the flanges thereof. The operative surfaces are planar and parallel. A pair of angular walls extend from each pair of spaced flanges in converging relation with one another and a pair of central walls are spaced apart in the direction of the width of the operative walls a distance less than the width of the operative walls and integrally interconnected between the pairs of angular walls extending from the flanges. The operative walls and the central walls having a plurality of wall openings therein. An end member closes the opening at each end of the thin wall frame structure.

Abstract: The present invention is an extensible carpenter's level that is adjustable between a collapsed position and a fully-extended position. The level may be manufactured in a variety of sizes. An exemplary embodiment of the level is comprised of an innerslide and two outerslides. The innerslide has two sets of tracks or tongues. Each of the outerslides is slidably connected to the innerslide. In particular, one outerslide is adapted to slide along one set of tracks or tongues, and the other outerslide is adapted to slide along the other set of tracks or tongues. At least one of the slides includes at least one level bubble. The level preferably includes multiple level bubbles to enable a variety of measurements, e.g., a horizontal level, a vertical level, and a 45° level.

Abstract: A door jamb square made of two extensions, a vertical extension and a horizontal extension. Both extensions are provided with bubble spirit levels and are attached forming a right angle, that can be fit into the corner of a door jamb to square that door jamb. The door jamb square is secured to the door jamb using a nailing plate, web plate and a bolt. The web plate is placed within the webbing of the door jamb square, covered by the nailing plate. The web plate and nailing plate each have an aperture aligned and fitted with the bolt. Additional sheetrock screws are used to secure the other side of the nailing plate and door jamb assembly to the door jamb.

Abstract: A laser level with a housing composed of two parts for storing the laser level in a protected manner, wherein the laser level is composed of an instrument body, bubble levels in the instrument body, a laser beam generator with lens system and a fixed leg and two vertically adjustable legs. One of the housing parts is provided with receptacles for the legs, wherein the receptacles are integrally formed at an inner side of the bottom of the housing part. The other housing part has receptacles for the legs, wherein the receptacles are integrally formed in an outer side of a cover of the housing part. At least one stand thread is provided at an inner side of the outer housing part.

Abstract: A level apparatus is provided with an elongate level and a support. The level and the support each have opposed ends, front and rear faces and top and bottom faces. The top and bottom faces of the support are substantially planar and parallel to one another, and the top and bottom faces of the level are substantially planar and parallel to one another. A central position on the support is pivotally connected to the level such that the rear face of the support is in opposed facing relationship to the front face of the level. The level can be used in a conventional manner without utilizing the support. However, the support can be pivoted relative to the level into an orientation where the top or bottom face of the support can be positioned on the upper face of a beam such that the level extends downwardly from the support and the beam. The level then can be used to define a plumb line to which other structural elements can be positioned or compared.

Abstract: A multipurpose tool for use by woodworkers or the like and which includes a body portion having end walls and first and second pairs of opposed side walls, with a plurality of level indicating means, at least one magnet recessed in the body portion, and a recess formed in one end of the body portion and extending between the first pair of opposed side walls, and a protractor arm having a longitudinally extending slot mounted in the recess.

Abstract: A level includes an elongated body having an open end for receiving a power supply assembly therein. A bubble vial is engaged with a frame which is connected to the body. A light bulb is engaged with an end of the frame and is powered by the light bulb. A switch is connected to an end of power supply assembly and is accessed by a user.

Abstract: Instrument for obtaining a reference line to realize, in correspondence of this line, working points, said working points being preferably situated in correspondence of a working surface. The instrument includes: a laser ray emitting device (1), a supporting body (13), connecting means which attach it to a fixed reference surface. These connecting means include a hinge element (2) which enables to orientate the supporting body (13) and direct the laser ray and to keep it fixed in the desired direction in such a way that with the line defined by the laser ray it is possible to find the working points.

Abstract: A spirit level comprising a body having a level face for setting a surface, at least one bubble vial mounted in the body, the bubble vial having a longitudinal axis generally perpendicular to the level face, and an optical transfer element fixed to the body which transfers an image of the bubble vial to a viewing plane generally parallel to the level face.

Abstract: A laser level device includes a casing having a laser beam emitting device received therein and a tube is rotatably engaged with an end of the casing so that the laser beam generated from the laser beam emitting device enters in the tube. A reflection mirror is received in the tube so as to reflect the laser beam toward a polariscope connected to a peripheral wall of the tube. The tube can be rotated to adjust the position of the polarisocpe so as to obtain the reference lines at different positions.

Abstract: A simplified light weight squaring tool used by pipe fitters in conjunction with templates or pipe fitters tables for laying out pipe intersect angles and geometry as required for cutting and joining pipe of various sizes at various angles. A rugged tool intended primarily for on sight use, comprises a self centering straight edge arranged for guiding and scribing of lines on flat surfaces, curved surfaces or across the diameter of a pipe face, an integral adjustable protractor level, allowing for fast and accurate perpendicular and angular orientation of the straight edge when used in the vertical plane and a self aligning extension arranged for expanding the capacity of the squaring tool and transcribing angular lines from the ace of pipe sections onto the circumference or outside diameter of pipe parallel to longitudinal centerline of the pipe as required for layout.

Abstract: A measuring and leveling device constructed with bubble vials for leveling which are movable to the precise point of application, with the measuring scale situated on a surface so constructed as to allow the scale to be located directly against and parallel to the surface to be measured. The device serves for both measuring and leveling tasks in one tool, and is constructed including a body portion provided with a ruler for measuring distances between points, in which the measuring scale is marked on a surface which tapers to a flat edge as in a conventional ruler. The body portion has two parallel tracks along its longitudinal axis, and two clamps situated on the body of the leveling device, each of which is held in place by tabs situated on the underside of the clamps and insertable into the parallel tracks, each clamp including a bubble vial mounting portion into which a bubble vial is fixedly mounted.

Abstract: A foundation forming tool is comprised of an upper base and a lower base wherein the upper base is for resting upon the opposing planks comprising a foundation form well, and the lower base extends below the upper base, into the form well, for purposes of precisely and consistently defining the form well's width. The lower base can be made in 6, 8 or 10 inches in length, to conform to standard widths of foundation form wells. Additionally, this forming tool can be made to be telescoping and adjustable between these standard widths, so that one tool could accommodate a variety of forming needs. Finally, this forming tool further comprises a leveling apparatus for allowing a precise horizontal and vertical level to be achieved across a foundation form.

Abstract: A spirit level comprising a body having a level face for setting a surface, at least one bubble vial mounted in the body, the bubble vial having a longitudinal axis generally perpendicular to the level face, and an optical transfer element fixed to the body which transfers an image of the bubble vial to a viewing plane generally parallel to the level face.

Abstract: A door jamb square made of two extensions, a vertical extension and a horizontal extension. Both extensions are provided with bubble spirit levels and are attached forming a right angle, that can be fit into the corner of a door jamb to square that door jamb. The door jamb square is secured to the door jamb using a nailing plate, web plate and a bolt. The web plate is placed within the webbing of the door jamb square, covered by the nailing plate. The web plate and nailing plate each have an aperture aligned and fitted with the bolt. Additional sheetrock screws are used to secure the other side of the nailing plate and door jamb assembly to the door jamb.

Abstract: A spirit level employs an elongated housing having a rectangular cross-sectional outline and provided with registering elongated slots in its front and rear walls. At least one follower of the level has a main portion slidably installed in the housing and one or two pointers outwardly adjacent the slot in the front wall. The two end pieces of the housing are provided with bubble tubes, and each follower has a passage for introduction of a stylus or another suitable marking tool which can be inserted at the front wall to extend outwardly through the slot in the rear wall of the housing.

Abstract: A laser level includes a main frame having at least one monovial embedded in a surface of the main frame and a second frame is received in an end of the main frame. The second frame having a first tube for receiving a laser beam generating device therein, and a second tube for receiving a polariscope therein. A plurality of grooves are defined in an inner periphery of the second tube and a ridge extends from an outer periphery of the polariscope so that the ridge can be engaged with on of the grooves in the second tube to adjust the polariscope.

Abstract: An indicator has two radiation sources supported in a housing and directed to two perpendicular directions to generate two light beams and to indicate a right angle. A semi-transparent mirror is engaged in the housing, the light beam generated by one radiation source has a portion transmitted through the mirror and another portion reflected by the mirror to indicate another right angle, and to indicate two opposite points far spaced from each other. A cover has three windows aligned with the light beams for allowing the light beams to be transmitted out of said cover.

Abstract: A water level includes a hollow metal section having at least one bottom measuring surface and side walls, and at least one position sensor, preferably a bubble level. Usually two bubble levels are provided. The metal section is closed by end caps. A protective cap of an elastic, impact-proof material is placed on the upper side of the metal section and the protective cap is placed on the metal section in such a way that an impact energy introduced at a single point-like location is distributed over a larger surface of the metal section.

Abstract: A level comprises a body, a body orientation detector, a laser beam source, a laser beam configuring lens, and a manually engageable lens switch. The body orientation indicator is carried by the body and constructed and arranged to indicate an orientation of the body. The laser beam source is carried by the body and constructed and arranged to emit a laser beam from the body to a location on a surface remote from the body, the laser beam being directed at a predetermined orientation with respect to the body to interrelate the orientation of the body with respect to the location on the surface remote from the body. The laser beam configuring lens assembly is carried by the body and movable between a first position and a second position with respect to the laser beam source.

Abstract: A multi-purpose, multi-function tool of compact design made up of a plurality of components having levels thereon which interact together to provide a single tool which can perform a number of various functions or purposes within the design or construction industry. The tool having a support of predetermined thickness and being of a substantially triangular-shaped configuration defining a pair of legs and a hypotenuse. An edge member is situated on one of the legs of said support structure, the edge member being of a predetermined thickness greater than the predetermined thickness of the support structure for supporting the support structure on a surface. A rotatable member is pivotally mounted on the support structure for selective rotational movement with respect thereto and a curved extension protruding from the rotatable member having degree and rise markings thereon.

Abstract: A leveling tool including a screed bar and a scraper blade. The screed bar includes either a slot or a bracket to slightingly accommodate the scraper blade. These grape or blade is vertically adjusted within the slot or bracket to a desired height and may be fixed at the desired height by inserting bolts through aligned holes. Once the leveling tool has been adjusted to a desired height, the soil surface proximate the land escaping block can be planed or leveled at an elevation to enable a second block to be placed next to the first block, the tops of the blocks being level.

Abstract: A leveling and centering tool including a linear rail having a centering scale on one edge thereof and including numerals ascending upwardly in opposite directions from a centering point. A measurement scale having incremental spaces twice the size of the spacing on the centering scales and including the opposite edge of the rail. Leveling bubbles are incorporated on the scale and it may include a hand grasp.