Mitutoyo Holtest Type II Inside Micrometer

The Mitutoyo Holtest Type II Inside Micrometer is a precision three-point contact bore gauge for measuring internal diameters. Also known as a Holtest bore micrometer or internal micrometer, it is built for machinists, toolmakers, engine builders and quality inspectors who need repeatable inside diameter measurements in cylinders, bushings, bearings and other bored holes.

Key Features:

• Three-point contact design that self-centers in the bore for accurate, repeatable readings
• Hardened measuring contacts for durability and wear resistance
• Ratchet-style, friction-controlled thimble for consistent measuring force
• Mechanical micrometer-style thimble and sleeve scale for easy reading
• Lock mechanism to hold a reading while the tool is withdrawn from the bore
• Supplied with a setting ring, depending on the model, for checking and calibrating the tool

Backed by Mitutoyo's reputation for precision measuring instruments, the Holtest Type II series offers dependable accuracy and long service life in shop, tool room and inspection environments. Multiple measuring ranges are offered within the line to suit a variety of bore sizes.