The Mitutoyo Holtest (Type II) mechanical three-point internal micrometer complete set includes Holtest Type II gages capable of measuring inside dimensions from 12-200mm and 0.5-8in.

The Mitutoyo Holtest (Type II) mechanical three-point internal micrometer utilizes three self-centering anvils constructed of alloyed steel for accurate and efficient measurements of inside dimensions of bores. The Mitutoyo mechanical Holtest (Type II) internal micrometer features three alloy steel anvils evenly spaced at 120° for true alignment of the axis bore for accurate, easily repeatable measurements. A hardened steel spindle with a carbide ball and cone with a carbide pin ensure accuracy and durability when extending and retracting the anvils. The ratchet stop mechanism provides a constant measuring force on the hardened-steel spindle to ensure accurate, even measurements.

Mitutoyo Holtest Type II

• The anvils and cone are made from an alloy tool steel with a hardness of HRC60.5 or more
• Alloy steel anvils evenly spaced at 120° for true alignment of the axis bore
• Economy version of the three-point internal micrometer
• Three-point design ensures self-centering action for stable measurements
• Bore micrometers fitted with the constant-force ratchet enable consistent measurements with minimal operator variation

Mitutoyo Mechanical Holtest (Type II) Three-Point Internal Micrometers:

• Available in Metric and Inch models
• Optional extension rods (sold separately) for measuring deep holes
• Optional setting rings (sold separately) for zero point adjustment
• Scale on thimble and sleeve is laser etched for easier reading in all conditions
• Holtest up to 100mm / 4in diameter measurements - supplied in a fitted plastic case
• Holtest over 100mm / 4in diameter measurements - supplied in a fitted wooden case