Mitutoyo 368-263 Holtest Bore Gauge 0.425-0.5 Inch Range

The Mitutoyo 368-263 Holtest is a precision inside micrometer designed for accurate measurement of bore diameters, holes, grooves, and parallel surfaces in the 0.425 to 0.5 inch range. This three-point contact bore gauge features a ratchet stop mechanism for consistent measuring force and repeatable results with 0.0001 inch resolution.

Key Features:

• Measuring range: 0.425 to 0.5 inches (10.795 to 12.7 mm)
• Resolution: 0.0001 inch (0.002 mm) for precise measurements
• Titanium nitride (TiN) coated carbide contact points for exceptional wear resistance and extended tool life
• Ratchet stop ensures consistent measuring pressure and reduces operator influence
• Three-point contact design provides stable, accurate measurements
• Compatible with optional setting rings for zero-point calibration and adjustment

Mitutoyo Holtest bore gauges are trusted by machinists and quality control professionals for their durability, accuracy, and reliability in production and inspection environments. The carbide-tipped construction with TiN coating delivers superior hardness and longevity even in demanding applications.