The Big 12" Imperial Speed Square With Layout Bar & Instruction Booklet is actually seven tools in one.
Ideal for construction, stairway layout, and large materials, it can be used as a framing square, tri square, mitre square, protractor, saw guide and, thanks to the Layout Bar, as a stair gauge as well as for determining out of square corners.
Made from heavy-gauge aluminium for durability, it has black graduations for easier reading and a matt finish to prevent glare.The Big 12" Imperial Speed Square has 1/4" spaced notches to facilitate scribing lines.
Full instructions are given in the Blue Book which contains all the formulas and instructions needed for the most commonly used roof and stairway construction.
Features
- 7 in 1 Square With Layout Bar- 1 Try Square, 2 Miter Square, 3 Saw Guide, 4 Laser Guide, 5 Protractor, 6 Out of Square Corners, 7 Line Scriber
- Heavy-Gauge Aluminium
- Black Graduations
- Matt Finish
- For Construction Stairway Layout Large Materials