A speed square is provided including a triangular flat plate having measurement markings indicated on at least one face, a T bar affixed to, and extending along, the length of a first side of the triangular flat plate, and an extension element hingedly connected to an end of second side of the triangular flat plate opposite the T bar. The extension element having measurement markings indicated on at least one face, such that the measurement markings of the triangular flat face continue on the extension element.

A speed square is provided including a triangular flat plate having measurement markings indicated on at least one face, a T bar affixed to, and extending along, the length of a first side of the triangular flat plate, and an extension element hingedly connected to an end of second side of the triangular flat plate opposite the T bar. The extension element having measurement markings indicated on at least one face, such that the measurement markings of the triangular flat face continue on the extension element.

A trim square may include abase and a triangular main body defined by a first leg and a second leg that form a right angle at an intersection therebetween, and a third leg extending between distal ends of the first and second legs. The base may be operably coupled to the main body via a retention element at one of the first leg or the second leg. The main body may extend in a first plane, and the base may extend in a second plane substantially perpendicular to the first plane. The base may be movable relative to the main body in the second plane.

A trim square may include abase and a triangular main body defined by a first leg and a second leg that form a right angle at an intersection therebetween, and a third leg extending between distal ends of the first and second legs. The base may be operably coupled to the main body via a retention element at one of the first leg or the second leg. The main body may extend in a first plane, and the base may extend in a second plane substantially perpendicular to the first plane. The base may be movable relative to the main body in the second plane.

An L shaped versatile, combination construction square for a carpenter having measured marks for all common framing combinations about its six sides. A series of template openings, as well as two adjustable base arms able to set angles for setting plumb, lock into a position to cut rafter tails and birds mouths as well as stair treads and risers. It has a precise scale that accommodates a traditional carpenter's rectangular 3/16 inch wide pencil lead that allows for inch increments that can be transferred the length of a board using the adjustable arms. It also functions as a framing square and a laser angle finder.

A multi-function pair of square gauges for a steel square, the more common of which are referred to as framing or rafter squares. The square gauges give the steel square 90 degree abutments which are in precise vertical alignment with the square blades vertical edge, which essentially turn a carpenter's square into a try square. They also give the square ledges which self-support the square when in normal use. They can also be positioned on the square as a length or depth gauge for marking framing stud layout or repetitive cut lines, and can also be positioned as an improved set of stair or rafter gauges.

A multi-function pair of square gauges for a steel square, the more common of which are referred to as framing or rafter squares. The square gauges give the steel square 90 degree abutments which are in precise vertical alignment with the square blades vertical edge, which essentially turn a carpenter's square into a try square. They also give the square ledges which self-support the square when in normal use. They can also be positioned on the square as a length or depth gauge for marking framing stud layout or repetitive cut lines, and can also be positioned as an improved set of stair or rafter gauges.

A speed square is provided including a triangular flat plate having measurement markings indicated on a least one face, a T bar affixed to, and extending along, the length of the first side of the triangular flat plate, and an extension element operably coupled to an end of second side of the triangular flat plate opposite the T bar. The extension element having measurement markings indicated on at least one face, such that the measurement markings of the triangular flat face continue on the extension element.

A speed square is provided including a triangular flat plate having measurement markings indicated on a least one face, a T bar affixed to, and extending along, the length of the first side of the triangular flat plate, and an extension element operably coupled to an end of second side of the triangular flat plate opposite the T bar. The extension element having measurement markings indicated on at least one face, such that the measurement markings of the triangular flat face continue on the extension element.

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.