RCBS Electronic Digital Micrometer gives you instant readings and is the top of the line in quality reloading equipment. Features enameled metal body with matte finish, non-glare thimble and outside micrometer has 0-1 inch range. Counter reads to .0005 inches, resolution .0005 inches and accuracy .0001 inch. Large, easy to read numbers for error reduction with instant inch/millimeter conversion. Zero adjust at any position. The RCBS Electronic Digital micrometer has thimble lock for measuring like objects, and battery is included. Auto off after five minutes for longer battery life and comes with a fitted storage case to protect your equipment.