INCRA Protractor 6 in. is a precision tool designed to not only measure angles but also mark them automatically and accurately. Crafted from stainless steel, this protractor features extra-long guide slots at key intervals including 0.5, 1, 5, 22.5, 30, and 45 degrees, ensuring alignment every time. It comes equipped with a convenient built-in 6-inch centering rule along the lower edge, which includes marking holes every 1/32 of an inch for precise measurements. For added versatility, the protractor includes a detachable fence that allows for secure alignment to edges, as well as a fine .5mm mechanical pencil for making sharp, clear marks. Made in the USA, this tool is i for woodworkers, craftsmen, and anyone needing reliable angle marking and measuring.