Mitutoyo 368-907 368 Series Mechanical Holtest 2-Point Internal Micrometers Complete Set (3-4, 4-5, 5-6 mm)

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.

Features:

• Metric and Inch set
• Optional extension rod allows for measuring deep holes
• Scale on thimble and sleeve is laser etched for easier reading in all conditions
• Supplied in a fitted plastic case