Mitutoyo 368-992 Holtest Micrometer Set, type II, 20 to 50 mm

Description

The Mitutoyo 368-992 Holtest Micrometer Set, type II, 20 to 50 mm is a mechanical, three-point internal micrometer set for measuring the diameter of bores. The set includes four separate gauges to cover the specified range and uses hardened alloy steel contact points.

Key features

• Three-point contact: The micrometers use a 3-point design with anvils spaced at 120° for self-centering and stable, repeatable measurements.
• Constant force ratchet: A built-in ratchet stop ensures a constant and uniform measuring force, minimizing variations in measurement results between different operators.
• Affordable Type II design: This "economy" model uses hardened alloy steel contact points instead of more expensive titanium-coated carbide, making it a popular and more affordable option while maintaining the same level of accuracy as premium Holtest versions.
• Included extension rod: An extension rod is included in the set, allowing for measurement of deep bores that would otherwise be out of reach.
• Blind bore measurement: The design allows for measurement closer to the bottom of a blind hole.
• Calibration accessories: The set comes with two setting rings (25mm and 40mm) for zero-point adjustment and calibration, ensuring measurement accuracy.
• Full metric set: The 20 to 50mm range is covered by four separate gauges: 20-25mm, 25-30mm, 30-40mm, and 40-50mm.
• Fitted case: A case is included with the set for secure storage and portability. Some retailers may supply a wooden case, while others offer a plastic one.