This Mitutoyo No 542-123 Linear Gage is a reliable tool for measuring up to 50mm in a linear fashion. The gauge comes with a cord for easy storage and transport. It is made by Mitutoyo, a trusted brand in the metalworking industry. This gauge is perfect for use in a variety of settings, including CNC, metalworking, and manufacturing. It is an essential tool for anyone in need of accurate measurements for their projects.