This Faithfull handy pocket-sized caliper is manufactured from a lightweight non-marring carbon fibre material. The digital selection button enables readings to be displayed in either metric or imperial format and will provide precision readings from 0.01mm and 0.0005in. The calipers have an easy-to-read clear liquid crystal display and can perform internal, external and step measurement functions. A convenient pocket clip is provided to help keep the calipers close at hand and safe. Specifications: Measuring range: 0-75mm (0-3in).Resolution: 0.01mm (0.0005in).Accuracy: ± 0.02mm (0.001in).Auto off: 5 minutes.Display: LCD, character height 8mm.