Digital Calipers
A large-screen digital caliper with a zinc alloy shell and a 4CR13 stainless steel ruler body. It supports inch/millimetre conversion, ON/OFF and ZERO, and measures inside and outside diameters, steps and depths. It powers on when slid and shuts off automatically after 5 minutes of inactivity, running on one CR2032 3V button cell for general dimensioning and quick shop-floor inspection.