MITUTOYO 25 to 30mm Holtest Inside bore .005MM Micrometer 368-707 with Master You are Purchasing a a Mitutoyo .800 to 1.000 Holtest Internal 3 Point Interchangeable Anvil Type Micrometer with Master, Model 368-707 Calibrated. These Holtests are versatile, self-centering three-point internal micrometers for the accurate and efficient direct-measurement of internal diameters. Three anvils, evenly spaced at 120 apart, contact the internal wall surfaces and find true alignment with the axis of the bore for accurate ID measurement. FEATURES 25 TO 30MM Measuring Capacity .005MM Graduation 90MM measuring depth With Ratchet Stop for constant force. Includes storage case, setting master and wrench shown For More Information see: This item is manufactured by the world's largest metrology company, founded in 1934 that creates the most advanced micrometers, calipers, indicators and other measurement tools in the world. We have lots of quality inspection tools available. Additional prep fees may apply.