Woodpeckers Precision Woodworking Tools CRPSQ6-INRD Carpenters Square, 6-Inch A perfectly machined combination 90 and 45 with handles for a physical reference to the edge of the work piece The blade is machined from cast and ground aluminum tool plate This expensive material is utilized for its mechanical stability and tendency to maintain close tolerances after machining The handles are milled from solid bar stock and fastened to the body with high strength socket screws Anodized for durability and appearance, the Carpenters Square is also engraved with inch scale markings on the vertical leg