The vonhaus digital calipers offer precision measuring capabilities to from 150mm to 0001mm or 6 inch to 00005 inchr this caliper comes complete with a coin cell battery and includes a free spare and a free hardened plastic case with foam lining for protection when not in use r it also comprises a small locking thumbscrew which locks the jaws in place an easy to read large lcd display and a handy conversion chart at the back r made of hardened stainless steel it is an ideal tool for a br