The American Pride Outside Micrometer provides precise external measurements with a 0-1 inch measurement range for professional machining and inspection applications.American Pride Outside Micrometer Model APT436.1XRL-10-1 inch (0-25mm) measurement rangePrecision graduated thimble and sleeveRatchet stop for consistent measuring pressureHardened and ground measuring facesEssential for machinists engineers and quality control professionals requiring accurate external dimension measurements in manufacturing and inspection environments.