The 293-344 is a 25mm Digimatic Micrometre with ratchet thimble, based on new water-proof structural technology, the micrometre provides IP65 protection levels, enabling use in environments exposed to cutting oil, measurement data output function is available with a water-resistant connection cable, oil-resistance materials are used in all plastic components, ±0.00005-inch/±1µm instrumental error (3-inch/75mm or less range models), auto power ON/OFF function, origin setting (for ABS length measurements), zero-setting (for INC measurements), data hold, auto power ON/OFF, measurement data output and error reporting functions.