Johnson RAS-120 Rafter Square, 12 in L, Aluminum

As a saw guide, stair layout tool or rafter tool, Johnson's 12 in rafter square will help you get the job done accurately and easily. Its solid aluminum 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 in that are useful when transferring outside increments from the pivot point and Handy markers that measure 2 x 4 board dimensions of 1-1/2 in, 3 in and 3-1/2 in.