â·ÃÊͺ¶ÒÁÃÒ¤Ò A waterproof digital micrometer suitable for use in the presence of coolant or cutting oil. The highly stable frame incorporates a heat shield to preserve accuracy over extended measuring sessions. A ratchet thimble guarantees repeatable measurement. Digimatic Coolant Proof Micrometer 0-25mm / 0-1" Mitutoyo 293-344 Features: IP65 protection level, enabling use in environments exposed to cutting oil, etc. Anti-corrosion treatment is required after use. Measurement data output function is available with a water-resistant connection cable. Oil-resistant materials are used in all plastic components. ±1μm instrumental error. Auto power ON/OFF function. Certificate of Inspection is included. This certificate is undated and therefore cannot be used as a calibration certificate. Specifications: No. 293-344 Type Standard Range 0-25mm / 0-1" Actual Range 0-25.4mm / 0-1" Resolution 0.001mm / .00005" Accuracy ±1µm / ±.00005" Display LCD Flatness 0.3µm / .000012" Measuring Faces Carbide Parallelism 1µm / .00004" Protection IP65 Battery SR44 Battery Life Approx. 1.2 years under normal use Functions Origin-set, Zero-set, Preset, Inch/mm, Function Lock, Data Hold, Automatic Power On/Off, Low Voltage alarm, Counting Value Composition Error alarm. 293-344 Micrometer Mitutoyo à¤Ã×èͧÁ×ÍÇÑ´¢¹Ò´ äÁâ¤ÃÁÔàµÍÃì