As a saw guide, stair layout tool or rafter tool, Johnson's 12" rafter square will help you get the job done accurately and easily. Its solid aluminium body construction with CNC machined edges provide greater accuracy and durability, while the low-glare, protective powder-coated finish makes the permanent graduations and numbers easy to read. This square also features scribe notches starting at 1-3/4" that are useful when transferring outside increments from the pivot point, and handy markers that measure 2x4 board dimensions of 1-1/2", 3" and 3-1/2".
This 12" rafter square is a versatile tool for builders and contractors. Its thick edge is useful as a saw guide - it can be used directly with the saw against the square for cross cuts or angled cuts using the etched protractor scale. It can be used indirectly as well, using the scribing notches to create a saw cut line for rip cuts. The rafter square also simplifies stair layout - its integrated distance and angle scales let you quickly and accurately mark your cut lines on your stringers. And, of course, this rafter square has scales for cutting hip, valley and jack rafters.