A speed square with a highly-visible level vial where the level vial and cushioning members are sandwiched and compressed between interacting portions of the square's blade and the square's heel, with the cushioning members positioned above the level vial adjacent to the blade, or below the level vial adjacent to the heel, as desired. The level vial may be fully contained with a thick heel, or may be positioned in order to be held partially or fully above the top surface of a thin or thick heel, within a viewing notched formed in the blade for better visibility.

A carpenter square includes a body including a first, second, and third edges. A fence is pivoted to the first edge for movement among first, second, and third positions. In the first and second positions, the fence is normal to the body. In the third position, the fence is coplanar to the body. A hinge assembly pivots the fence to the body and includes a notch in the body, a recess in the notch, and a tab projecting from the fence and fit over the pin for reciprocating and swinging movement. The tab moves between a neutral stance, in which the tab is mis-registered with the recess and disables movement of the fence among the first, second, and third positions, and an advanced stance, in which the tab is registered with the recess and enables movement of the fence among the first, second, and third positions.

A rafter square is provided. The rafter square includes a first outer edge, a second outer edge and an angled edge that extends between and connects the first outer edge and the second outer edge. The rafter square includes a plurality of scribe holes with each scribe hole having at least one scribe notch. The scribe notches are sized and/or shaped to receive a variety of marking instruments (e.g., a mechanical pencil, carpenter's pencil, etc.) of various sizes for use with the rafter square.

A framing tool includes a pair of slotted beams that are affixed together at each end using an end spacer of a thickness selected to maintain the two slotted beams at a separation that allows a framing square to slide easily but snugly therebetween. Then, a user can cause the slotted beams to clamp down on the framing square using two sliding clamps so as to trap the framing square between the two slotted beams. The first sliding clamp is slidable along a slot of the pair of slotted beams, and the second sliding clamp is slidable along a slot of the pair of slotted beams. The framing tool also includes: a pair of end-fixed spacer assemblies, a first end-fixed spacer assembly configured to squeeze together the first ends against an end spacer, and a second end-fixed spacer assembly configured to squeeze together the second ends against an end spacer.

A multifunctional writing instrument includes a hollow body, wherein the hollow body comprises one or more cavities configured to attach with a plurality of technical drawing tools. A first writing member having a first writing tip is included. The first writing member includes lead and a mechanical pencil system being provided in a first portion of the hollow body, and wherein the first writing tip is axial with respect to the hollow body. A second writing member having a second writing tip is included. The second writing member comprises ink and an ink pen system being provided in a second portion of the hollow body. The first portion of the hollow body is at an opposite end of the second portion of the hollow body. The second writing tip is axial with respect to the hollow body.

A framing tool includes a pair of slotted beams that are affixed together at each end using an end spacer of a thickness selected to maintain the two slotted beams at a separation that allows a framing square to slide easily but snugly therebetween. Then, a user can cause the slotted beams to clamp down on the framing square using two sliding clamps so as to trap the framing square between the two slotted beams. The first sliding clamp is slidable along a slot of the pair of slotted beams, and the second sliding clamp is slidable along a slot of the pair of slotted beams. The framing tool also includes: a pair of end-fixed spacer assemblies, a first end-fixed spacer assembly configured to squeeze together the first ends against an end spacer, and a second end-fixed spacer assembly configured to squeeze together the second ends against an end spacer.

A squaring device includes a longitudinal square component configured to form a flange defining a slot therein, the slot adapted to rotatably receive a flat stock end. An L shaped square component includes a first outside edge and a second outside edge, the first and the second outside edges configured to form a flange defining a slot therein along a length of the flange, the flange adapted to rotatably receive one of the first forty-five degree and the second forty-five degree flat stock ends of the longitudinal square component. A magnetic clip is adjustable to fit either the flange end or the flat stock ends of the longitudinal square and the L square components via adjustable linear force sensitive pins, wherein a squaring device is formed and fixed magnetically and mechanically in place for pipe fitting by a combination thereof. Level indicators therein include magnifying lens and lighting.

A squaring device includes a longitudinal square component configured to form a flange defining a slot therein, the slot adapted to rotatably receive a flat stock end. An L shaped square component includes a first outside edge and a second outside edge, the first and the second outside edges configured to form a flange defining a slot therein along a length of the flange, the flange adapted to rotatably receive one of the first forty-five degree and the second forty-five degree flat stock ends of the longitudinal square component. A magnetic clip is adjustable to fit either the flange end or the flat stock ends of the longitudinal square and the L square components via adjustable linear force sensitive pins, wherein a squaring device is formed and fixed magnetically and mechanically in place for pipe fitting by a combination thereof. Level indicators therein include magnifying lens and lighting.

A carpenter tool includes a triangular body having a hypotenuse edge opposite a right corner, a first edge extending between the right corner and the hypotenuse edge, and a second edge extending between the right corner and the hypotenuse edge opposite the first edge. A fence is pivoted to the first edge for movement between first and second positions. In the first position, the fence is normal to the triangular body. In the second position, the fence is coplanar to the triangular body.

An educational ruler is a protractor, where the protractor can draw and measure angles. The educational ruler includes a planar disk having a semicircular circumference and labeled in scales along the semicircular circumference; a straight line edge connecting two edges of the semicircular circumference; a through hole on the planar disk; a first edge and a second edge extending from the through hole to the straight line edge; a third edge and a fourth edge extending from the semicircular circumference to the straight line edge. The first edge of the through hole of the educational ruler and the second edge of the through hole of the educational ruler intersect at 90 degrees scale of the planar disk to form the first right angle, and the included angle of the first edge of the through hole of the educational ruler and the straight line edge of the educational ruler is 45 degrees.