Resolution: 0.00005 / 0.001mm. Three-point contacts for self-centering measurement of the inside dimension (ID) of bores.Digital, single-value readout LCD displays in metric or inch units for readability. Rated IP65 for resistance to penetration by dust and liquid up to the force of a low-pressure water jet. TiN coating on measuring faces helps provide wear resistance. The electronic microprocessor can hold measurements at any position, convert to absolute value, set a temporary zero position, and return to a true zero reading. An automatic off function helps preserve battery life when the unit is not in use. The measuring faces are made of hardened steel are TiN-coated for wear resistance. The micrometer includes, and is powered by, a single SR44 silver oxide battery, and comes with a fitted case for storage. _gsrx_vers_811 GS 7.0.9 (811). The item "Mitutoyo 3-Point Digimatic Digital Holtest Micrometer Bore Gauge Gage 0.425-0.5" is in sale since Thursday, November 30, 2017. This item is in the category "Business & Industrial\Manufacturing & Metalworking\Metalworking Tooling\Inspection & Measurement\Micrometers". The seller is "jonathancmu" and is located in Newport, Michigan. This item can be shipped worldwide.