This digital vernier caliper is made from hardened stainless steel with a satin finish scale and etched black graduations. It features a bright LCD display, battery operation, a free-wheeling friction roller, and a lock mechanism. The caliper reads accurately to 0.001 inches and provides instant conversion between inches and millimeters. The large, easy-to-read numbers and durable stainless steel construction make this caliper suitable for precise dimensional measurements in physics laboratories, engineering workshops, and educational settings.