16 in. stainless steel blade features precision-etched black gradations, includes brass hardware Multi-tool: square, depth gauge, height gauge, plumb level, scriber, and level Impact-resistant acrylic vial in handle Spring-loaded bolt holds blade in place for firm, accurate settings Durable die-cast zinc body for durability Screw fit brass scriber located in handle for making marks 1/8 in. , 1/16 in. , 1/32 in. , and metric scale gradations 0. 001 in. accuracy