An instrument for establishing orientation of a pelvic prosthesis comprises a hub, a first arm attached to and extending from the hub, and a second arm attached to and extending from the hub. The first and second arms define a nominal plane of the apparatus, and may extend from the hub at an angle relative to each other. Distances between the first and second legs and between the first and third legs are adjustable. The first, second, and third legs have tips, and the tips of the first, second, and third legs define a plane having a predefined geometric relationship to the nominal plane of the apparatus.

An instrument for establishing orientation of a pelvic prosthesis comprises a hub, a first arm attached to and extending from the hub, and a second arm attached to and extending from the hub. The first and second arms define a nominal plane of the apparatus, and may extend from the hub at an angle relative to each other. Distances between the first and second legs and between the first and third legs are adjustable. The first, second, and third legs have tips, and the tips of the first, second, and third legs define a plane having a predefined geometric relationship to the nominal plane of the apparatus.

A drywall cutting device provides cutting and marking in drywall material either parallel or perpendicular to a reference edges. The device comprises a T-shaped with the head and arm portions immovably affixed to one another. The arm of the device carries a slidably adjustable cutting body thereon, with the cutting body being secured through an elongate slot formed in the center of the arm portion of the device.

A drywall cutting device provides cutting and marking in drywall material either parallel or perpendicular to a reference edges. The device comprises a T-shaped with the head and arm portions immovably affixed to one another. The arm of the device carries a slidably adjustable cutting body thereon, with the cutting body being secured through an elongate slot formed in the center of the arm portion of the device.

One or more clamping aid tools for mounting to various squares and straight edges, including carpenter squares, framing squares, speed squares or the like, and various straight edges and rulers for easily and accurately positioning various objects, either flat and/or round, magnetic or not. The clamping aid tools can secure these squares and straight edges to various objects while they are being fitted, secured and/or welded together.

A pivoting construction square is provided for measuring angles between adjacent planes, for drafting arcs or circles, and for quickly comparing measured angles to a roof pitch. The device comprises a first and second arm member pivotably attached to one another, wherein the outer ends thereof include apertures for accepting a writing utensil therein. A cross member is connected therebetween, one end thereof being pivotably fixed and the other being slidably disposed within an elongated rail. A locking pin member is adapted to lock the slidable end. Measurement indicia are provided along one arm to correspond to angles, while a quick reference guide comparing angles to roof pitch is also provided. Both arms include a bubble level, while one arm further includes a plurality of aligned apertures to receive a writing utensil. In this way, the device functions as a construction square, a compass, a ruler, and a protractor.

A pivoting construction square is provided for measuring angles between adjacent planes, for drafting arcs or circles, and for quickly comparing measured angles to a roof pitch. The device comprises a first and second arm member pivotably attached to one another, wherein the outer ends thereof include apertures for accepting a writing utensil therein. A cross member is connected therebetween, one end thereof being pivotably fixed and the other being slidably disposed within an elongated rail. A locking pin member is adapted to lock the slidable end. Measurement indicia are provided along one arm to correspond to angles, while a quick reference guide comparing angles to roof pitch is also provided. Both arms include a bubble level, while one arm further includes a plurality of aligned apertures to receive a writing utensil. In this way, the device functions as a construction square, a compass, a ruler, and a protractor.

Assemblies and methods for applying painter's tape to a wall for painting stripes thereon wherein the assembly has a first elongated body with a first straight outer edge, a second elongated body having a second straight outer edge with a substantially transparent body and having a tape width guide marking substantially along the elongated body with a plurality of elongated markings parallel to the second straight outer edge, two or more arms each having ends rotatably coupled to the first and second elongated bodies respectively, each of the arms being spaced apart of another and coupled at different positions of the elongated bodies, and a coupling mechanism rotatably coupling an arm to one of the elongated bodies and having a locking feature selectively fixing the angular position of the coupling mechanism and preventing rotation of the rotatably coupled arm relative to the coupled elongated body.

Assemblies and methods for applying painter's tape to a wall for painting stripes thereon wherein the assembly has a first elongated body with a first straight outer edge, a second elongated body having a second straight outer edge with a substantially transparent body and having a tape width guide marking substantially along the elongated body with a plurality of elongated markings parallel to the second straight outer edge, two or more arms each having ends rotatably coupled to the first and second elongated bodies respectively, each of the arms being spaced apart of another and coupled at different positions of the elongated bodies, and a coupling mechanism rotatably coupling an arm to one of the elongated bodies and having a locking feature selectively fixing the angular position of the coupling mechanism and preventing rotation of the rotatably coupled arm relative to the coupled elongated body.

A cement siding tolerance device and measurement tool, which has a main panel having a tab and a ridge, whereby the tab and the ridge perpendicularly extend from the main panel at opposite sides. The main panel has a front face, a rear face, a top edge, a bottom edge, first and second lateral edges, and a plurality of holes. The main panel has ruler-markings adjacent to the first and second lateral edges. The main panel is rectangular in shape. The tab perpendicularly extends from the front face separated a predetermined distance from the bottom edge, and the ridge perpendicularly extends from the bottom edge at the rear face. The tab and the ridge measure clearances and gaps between siding and trim products with solid surfaces building elements.