Mitutoyo 368-274 Holtest Mechanical 3-Point Internal Micrometer, 4-5"

368-274 Includes Only:

• A carrying case
• Certificate of inspection
• Key
• Internal Micrometer

Features with all optional accessories:

• Optional extension rod allows for measuring deep holes
• Optional setting rings for zero point adjustment
• Scale on thimble and sleeve is laser etched for easier reading in all conditions

The Mitutoyo Holtest mechanical three-point internal micrometer utilizes three self-centering anvils with precision contact points for accurate and efficient measurements of inside dimensions of bores. The Mitutoyo mechanical Holtest internal micrometer features three hardened-steel anvils evenly spaced at 120° for true alignment of the axis bore for accurate, easily repeatable measurements. Contact points are coated with Titanium Nitride (TiN) for added durability and precision. The holtest's ratchet stop mechanism provides a constant measuring force on the hardened-steel spindle to ensure accurate, even measurements.