Mitutoyo Digimatic Holtest Three-Point Internal Micrometer Set, 0.5-0.8"/12.7-20.32mm - 468-977 Introducing the Mitutoyo Digimatic Holtest Three-Point Internal Micrometer Set (Model 468-977), a versatile and durable measurement solution for precision work. Boasting an interchangeable head set, titanium-coated measuring pins for durability, and an IP65 protection level against water and dust, this micrometer set is ideal for machining environments with coolant fluid. The large LCD display with a 7.5mm character height ensures easy readings, complemented by features such as TiN-coated contact points for measuring blind holes, a ratchet stop for constant force, and optional extension rods and setting rings. Supplied in a fitted plastic case for models up to 100mm/4" and a wooden case for sizes beyond, this set embodies precision and functionality. With detailed technical specifications, functions like zero-setting and data output, and a range of optional accessories, the Mitutoyo Digimatic Holtest Three-Point Internal Micrometer Set is an indispensable tool for professionals seeking accurate measurements in various applications. These are three-point internal micrometers that offer you the following benefits: Interchangeable head set. Titanium-coated measuring pins give you excellent durability and impact resistance. They also have excellent resistance against water and dust (IP65 protection level), allowing you to use this product in machining situations that include splashing coolant fluid. Large LCD display with character height of 7.5mm enables you to read measurements easily. With setting rings and extensions. Features: TiN-coated contact points provide excellent durability and impact resistance and allow the instrument to measure to the bottom of a blind hole.(up to 100mm/4"models) Large LCD readout. Functions available: Presetting, Zero/ABS, power On/Off Data hold, Data out put, Error alarm, Battery replacement alarm. With Ratchet Stop for constant force. Can measure deep holes by attaching an Extension rod(optional). Setting rings for origin point setting are optional. Supplied in fitted plastic case up to 100mm / 4". Over 100mm / 4" supplied in wooden case. Technical Data: Accuracy: Refer to the list of specifications. Resolution: 0.001mm or .00005"/0.001mm (over 5" models: .0001"/0.001mm) Contact point: TiN-coating Measuring method: Three-point method Display: LCD Battery: SR44 (2 pcs.), 938882 Battery life: Approx. 8 months under normal use Function: Zero-setting, Data hold, Data output, Preset, inch/mm conversion (inch/mm models) Alarm: Low voltage, Counting value composition error