Mitutoyo 368-864 Series 368 Mechanical Holtest (Type II) Three-Point Internal Micrometer, 0.5 to 0.65", inch

Description

The Mitutoyo 368-864 Series 368 Mechanical Holtest is a three-point internal micrometer designed to measure the inside diameter (ID) of bores with a range of 0.5 to 0.65 inches. The "Type II" designation indicates that this is an economy model featuring hardened tool-steel anvils, rather than the titanium-coated anvils found on other versions, while retaining the same accuracy.

Key features

• Measurement range: 0.5 to 0.65 inches.
• Three-point contact: Features three anvils spaced at 120° for self-centering and true alignment, ensuring accurate and repeatable measurements.
• Mechanical readout: Uses a vernier scale on the thimble and sleeve for easy-to-read, precise measurements.
• High accuracy: The micrometer has a resolution of 0.0002" and an accuracy of ±0.0001".
• Consistent measuring force: Equipped with a ratchet-stop mechanism that provides a constant measuring force, which eliminates user-to-user measurement variations.
• Blind hole capability: The design allows for measurements to be taken closer to the bottom of blind bores.
• Durability: Made of high-grade tool steel with alloy steel anvils for excellent durability.
• Finish: Features a satin chrome finish to resist rust and glare.
• Extensions: Can measure deep holes with the use of an optional extension rod.