The Mitutoyo 1 to 5 Inch Long 5-Piece Micrometer Calibration Standard Set is a precise and reliable tool for accurately measuring micrometers. This set includes five calibration standards ranging in length from 1 to 5 inches, providing a comprehensive range for various measuring needs. The set comes in a convenient storage box for easy organization and transport. Perfect for professionals and hobbyists alike, this micrometer calibration standard set ensures accurate and consistent measurements in a variety of applications.