Fowler 54-554-722 External Electronic Caliper Gage, 0-0.790" Measuring Range, 0.0005" Resolution, 0.0008" Accuracy Accuracy of 0.0008"/0.02mm and 0.0005"/0.01mm resolution for precise measurements Plastic body, steel arms, and hardened steel contact point for durability Digital, single-value readout LCD shows inch and metric units for versatility when measuring Absolute and incremental modes for taking intermediate or differential measurements Direct RS-232 output for data transfer