This is a versatile tool that can be used as a square, height gauge, depth gauge, rule, level, and more. It has a hardened and tempered blade that is durable and accurate. The tool features metric and inch graduations, and has precise 90 and 45 degree angles. It also comes with a scriber and a spirit level, making it even more useful for a variety of applications. It is a handy tool to have in the workshop, and is suitable for use in metalworking, woodworking, and other tasks where precise measurements are required.