The Machinists Screw Pitch Gage is a precision tool used for measuring the thread pitch of screws, ranging from 4 to 84 threads per inch. Made in the USA, this gage is designed for metalworking inspection and measurement, specifically in the CNC, metalworking, and manufacturing industries. With a simple and straightforward design, this thread gage is a reliable and efficient tool for ensuring accurate measurements and consistent quality control in screw production.