A machinist square, also called an engineer's square, is the metalworker's counterpart to a woodworker's try square. It consists of a steel blade set into a heavier body at a ninety-degree angle, either welded or pinned in place, and it usually has a small notch at the inside corner of the square so that stray particles cannot build up there and throw off the square's accuracy.
Reader Challenges (0)
No disputes yet. Spotted an error or a better source? Open the first one.
Sign in to dispute this or suggest a correction.