Abstract: A level multitool, comprising a plurality level bodies, wherein each of the plurality of level bodies comprises at least one level, bubble level or spirit level and wherein each of the plurality of level bodies is removably connected to another of the plurality of level bodies by a hinge such that a first level body connected by a first hinge can articulate with respect to a second level body connected thereto via the first hinge so that the first and second level bodies may be releasably locked by the first hinge in a plurality of positions wherein an angle between the first and second level bodies at each position is different than the angle therebetween at each of the other plurality of positions.

Abstract: A multifunction straight edge guide having a handle and a straight edge. The handle has a plurality of perimeter surfaces and the straight edge has a mating edge to mate with one of the perimeter surfaces to interconnect the handle and the straight edge. The handle has three sections, two outer sections and a central support ledge. The outer sections define sidewalls which are generally perpendicular to the support ledge so that the straight edge guide can be used with either the left or right hand by turning the straight edge guide over. Each of the plurality of perimeter surfaces are angled with respect to the sidewalls.

Abstract: The invention herein provides a leveling device that is attachable to a wall surface. More particularly, the leveling device herein comprises stud attachment members that are useful for attaching the leveling device to a wall surface thereby enabling the placement of tile onto a wall in a straight line.

Abstract: An extensible apparatus for locating attachment points includes a first end piece, a main track fixed at its proximal end to the first end piece and extending from the first end piece to its distal end, an auxiliary track extending along and extensible distally from the main track, and a auxiliary end piece fixed to the distal end of the auxiliary track. The first end piece has a flat rearward face for placement against a wall. The tracks extend in parallel with the flat rearward face of the first end piece. A main shuttle is slidably movable along the main track, and an auxiliary shuttle is slidably movable along the auxiliary track. Each shuttle includes a rearwardly protruding marker.

Abstract: An apparatus enabling inclination measurements or irregular surfaces comprising a retaining end adapted to temporarily hold a device equipped with an inclinometer and a supporting end, fixed to the retaining end, conformed to abut an irregular surface whereby the apparatus enables the device equipped with an inclinometer to measure inclination of an irregular surface.

Abstract: A multi-purpose squaring and leveling tool comprising a generally trapezoidal body, angled corners, and leveling inserts. The tool may be used for tradesman, pipe fitters, and home carpenters as a means of setting joints and other construction or repair. The shape of the tool allows for the squaring and leveling of joints around obstacles which may present barriers to traditional squaring tools.

Abstract: An adjustable picture and wall hanging device comprising an elongated strap having thereon a pair of spaced sliders, each slider having a point thereon to enable a spot to be marked on a wall, and a level centrally mounted on the strap for facilitating leveling of the device so that the item to be mounted will be level. Alternatively the level can be on one slider. This device enables pictures and other items to be hung on a wall in a simple, quick and easy manner.

Abstract: A magnetic compass modified for use in linear, angular and, geometric as well as, or instead of, directional measure. Body (30), (35) manufactured to a predetermined circumference and made of a break-resistant material. Mounted on the base (33a) or, suspended from the top section (33b), is a freely pivoting or movable magnetic pointer (32) and a transparent, or partially transparent, upper section (35) so that the position of the pointer may be observed. Outer edge (31) made of slip-resistant material for contact and rotation on surface of structure being measured. Outer edge of base is calibrated with appropriate units positioned for use with pointer. Calibration (FIGS. 4a-c) could also possibly be inscribed on upper section of body instead of on the base. Most operations center around the locations of two variable points on the Compass Ruler, the contact point (37) and the zero point (36).

Abstract: A universal guide for an electric drill includes a transparent elongated L-shaped member with two mutually perpendicular faces. Each face has two parallel long edges and two short edges, and they share a common long edge. For each face, one of the two short edges is a perpendicular edge and the other of the two short edges is an angled edge in which the perpendicular edges are perpendicular to the long edges, and the common edge is formed such that the perpendicular edges are mutually adjacent to each other and the angled edges are mutually adjacent to each other. Magnetic areas are formed on surfaces of each of the faces. Level indicators are attached to each face perpendicular to the common long edge and to the common long edge in a direction perpendicular to the perpendicular level indicators. At least one long edge is ruled and guide lines are marked on the faces in a direction parallel to the long edges.

Abstract: A measuring instrument includes a casing served as a rule, an angular level secured in a central portion of the casing having a rotational protractor rotatably mounted in the level for measuring any angles, a horizontal gauge provided in a right side portion of the casing for checking a horizontality, a vertical gauge formed in a left side portion of the casing for checking a verticality, a reelable plummet provided in the casing and protruded outwardly for checking a vertical line or plane, a measuring tape wound in the casing and pulled outwardly for measuring a length, and a protractor template rotatably secured on the casing having a plurality of guide slots of many geometric shapes punched in the template for guiding the drawing of many geometric shapes and having a plurality of angular graduations circularly formed on a pivotal portion of the template also for measuring planar angles, so as to provide a measuring instrument having multiple measurement uses.

Abstract: Measuring apparatus having at least one measuring scale for effecting measurements, a straight edge for marking straight lines, a spirit level for testing for horizontality, and a friction-creating device for providing a grip for the measuring apparatus on a surface against which the measuring apparatus is to be used.

Abstract: A Square-Level-Measuring Tool provides a combination of several tools including a tape measure, levels, stud locator and marker, packaged into a single unit. This new tool is light weight, convenient to carry, easy to use and saves time.

Abstract: A housing substantially with a rectangular-box shape containing a flexible measuring tape stored therein and a tape-opening provided on the upper face thereof. An ink box containing ink and an ink thread is provided on the front face of the housing. The outermost end of the ink thread is attached to a needle grip with a needle. A level is provided on the upper face of the housing. A pivotal centering needle is provided on a position of one side face of the housing proximate to the tape-opening. The centering needle is used as a centering arm for a pair of compasses while the measuring tape is used as a cantilever arm for determining the radius of an arc or a circle. A pivotal plate set of the first side face of the housing and a hook member set of the opposite face, together with the ink thread pulled out, provide the function of a plumb rule for determining the vertically of a perpendicular plane.

Abstract: Disclosed is a combination rule, horizontal level, vertical plumb and straight edge. By use of two parallel scales running reverse to one another mounted to an elongated member, direct read measurements can be taken between two points up to a distance equal to twice the overall length of the tool such that no arithmetic computation is required. Perpendicularly mounted target levels allow the tool to be used as both a vertical plumb and a horizontal level. A flanged box beam member provides finger tip recesses for easy manipulation and maneuvering of the tool by the user.

Abstract: A combination of bi-directional levels is provided as an integral part of the projecting terminal section of a very thin rule. Assembly within the rule section is accomplished by means of over-sized apertures to receive centrally disposed therein fluid level cylinders with a casting of transparent hardened moldable base material encompassing the rule, and interstitially surrounding said levels such as to form a capsular structure maintaining the rule in proper spaced relation for folding, in the instance of a folding rule, with a structural reinforcement for the section of rule supporting the levels.

Abstract: A gravitational protractor and measuring tape for determining the distance between respective conduit ends residing at differential elevations.

Abstract: An orienteering compass comprises a compass housing (3) with a movable north indicator (4) and a base plate (1) having a fixed course line (5). To enable directions to be extracted and checked in a simple fashion, and to enable a map to be read more positively when orienteering, the compass housing (3) is non-rotatably connected to the base plate (1) and the base plate together with the compass housing is arranged so that it can be pressed against and readily held on a map with the course line (5) in the desired direction. Preferably, the course line (5) extends in front of the compass housing (3) and coincides with a longitudinally extending edge (6) of the base plate (1).

Abstract: This invention is directed to a method of determining and recording an indeterminate sequence of distance/direction coordinates in a manner that permits the user or some other person to subsequently retrace the coordinates. Apparatus is disclosed to enable the user to record and retrace the coordinates with a high degree of precision.

Abstract: Apparatus for determining the positional coordinates of a moving object including a plurality of magnetic field vector detecting devices, an inclination detecting device for detecting inclination of the magnetic field vector detecting devices, a distance detecting device for detecting the distance that the moving object has travelled, and arithmetic means which receives outputs from the magnetic field vector detecting devices as well as from the inclination detecting device, calculates the horizontal component force vector of the geomagnetic field by using the outputs from the magnetic field vector detecting devices and from the inclination detecting device, further calculates the vector in the progress direction of the moving object by referring to the horizontal component force vector, and integrates the product of the vector in the progress direction and the output from the distance detecting device, whereby the positional coordinates are obtained as the output of the arithmetic means, and the coordinates

Abstract: A straight edge level is provided which is comprised of a level body having a plurality of conventional leveling bubbles thereon, and a sliding scale member which is extendable from but substantially planar the level body itself. In the preferred embodiment, a scale is provided on the surface of the level body, and a second scale provided on the surface of the slide member. In operation, an extension of the slide member will produce a scale reading at the end portion of the level body from which the slide member extends. The scale provided on the level body begins its numerical climb from that same location on the level body. Thus, in operation, the user can add the numbers appearing on the two scales and get a desired overall measurement.

Abstract: A combination collapsible ruler and level includes a pre-stressed coilable and uncoilable spring strip ruler with a level tube mounting block mounted intermediate the strip ends. The mounting block has a foot portion which engages the supporting surface to make the spring strip self-supporting on a surface with the level tube in the proper plane. When collapsed the spring strip forms two coils which abut adjacent the level mounting block to provide for convenient handling.