Mitutoyo Holemike Set - Complete Gages The performance of the well-established Mitutoyo Holtest series, well-known for their highly stable three-point self-centering action, has been enhanced by coating the contact surfaces with titanium nitride for longer life. Features include... 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. TiN-coated measuring contact points. Specifications include... 3-4" / 76.2-101.6mm Measuring Range 0.00005" / 0.001mm Resolution Set includes... Complete Gage with Display Unit for each size 3" - 3.5" Measuring Range 3.5" - 4" Measuring Range 3.5" Setting Ring