The Starrett Thickness Gage No. 71 with Locking Device is a precision tool for measuring the thickness of various materials, specifically designed for metalworking inspection and measurement tasks. Made by the renowned brand Starrett, known for their high-quality precision gages, this tool ensures accurate and reliable results. The locking device feature adds versatility and convenience to the gage, making it a valuable tool for professionals in the CNC, metalworking, and manufacturing industries. Made in Athol, Massachusetts, U.S.A., this thickness gage embodies quality craftsmanship and attention to detail.