Instant reading. Top of the line. Enameled metal body with matte finished, non-glare thimble. Outside micrometer has 0 to 1"/0 to 25mm range. Counter reads to 0.00005". Resolution 0.0005"/0.001mm. Accuracy 0.00005"/0.001mm. Large, easy to read numbers for error reduction with instant inch/millimeter conversion. Zero adjust at any position. Thimble lock for measuring like objects. Battery included. Auto off after 5 minutes for longer battery life. Fitted wooden storage cases.