Mitutoyo 368-912 Mechanical Three-Point Internal Micrometers, 12-20mm

Mitutoyo, 368-912, Mechanical Holtest Three-Point Internal Micrometers, 2 Gage Set 12-20mm

Features:

• Optional extension rod allows for measuring deep holes
• Scale on thimble and sleeve is laser etched for easier reading in all conditions
• Holtests up to 100mm / 4" diameter measurements supplied in a fitted plastic case
• Holtests over 100mm / 4" diameter measurements supplied in a wooden case

The Mitutoyo mechanical Holtest internal micrometer set includes complete gages (micrometer head units and measuring heads) for each size. Three hardened-steel anvils evenly spaced at 120° allow for true alignment of the axis bore for accurate, easily repeatable measurements. The holtest's ratchet stop mechanism provides a constant measuring force on the hardened-steel spindle to ensure accurate, even measurements.