Mitutoyo 368-271 Holtest Internal Micrometer 2.5-3 Inch Range

The Mitutoyo 368-271 Holtest is a precision internal micrometer designed for accurate measurement of bore diameters, holes, and internal grooves in the 2.5 to 3 inch range. This three-point contact bore gauge delivers exceptional accuracy with a resolution of 0.0002 inches, making it ideal for quality control and precision machining applications.

Key Features:

• Measurement range: 2.5 to 3 inches
• Resolution: 0.0002 inches (0.005mm) for precise readings
• Titanium nitride (TiN) coated carbide contact points for superior wear resistance and extended tool life
• Ratchet stop mechanism ensures consistent measuring force and repeatable results
• Three-point contact design provides stable, accurate measurements
• Optional setting rings available for zero-point calibration and adjustments

The Holtest series is renowned for its durability and precision in workshop and inspection room environments. The carbide-tipped contact points with TiN coating provide exceptional hardness and resistance to wear, even in demanding production settings. The ratchet stop ensures that operators apply consistent pressure for reliable, repeatable measurements across multiple users.