Description The Mitutoyo 368-764 Holtest Type II 3-Point Internal Micrometer is a precision tool designed for accurate and repeatable internal diameter measurements. Covering the 12–16 mm range, this instrument features a three-point self-centering contact system that ensures consistent alignment inside bores. Known for its smooth operation and robust construction, it is ideal for machinists, toolmakers, and quality control engineers. This unit is new in its fitted Mitutoyo case, complete with inspection certificate and adjustment key. Key Specifications Measuring Range: 12 – 16 mm Graduation (Resolution): 0.005 mm Accuracy: ±2 µm Spindle Pitch: 0.5 mm Measuring Depth: ~82 mm (without extensions) Contact Points: Three hardened steel/carbide contacts for wear resistance and long life Scale Type: Mechanical analog thimble with vernier scale Ratchet Stop: Yes – ensures consistent measuring force Body Construction: Precision ground steel with satin-chrome finish for glare-free readings Weight: Approx. 150 g Features 3-Point Self-Centering DesignThe three contact points automatically align the micrometer inside the bore, eliminating operator error and improving measurement reliability. High Accuracy & Fine ResolutionWith 0.005 mm graduations and ±2 µm accuracy, it provides the confidence required for precision internal measurements. Durable Measuring ContactsHardened, wear-resistant contacts ensure consistent performance even under regular use in demanding workshop conditions. Ergonomic & Smooth OperationThe ratchet stop and finely knurled thimble allow easy, repeatable adjustments while maintaining consistent measuring pressure. Compact & LightweightAt just 150 g, it is lightweight and comfortable for repeated use without fatigue. Supplied AccessoriesDelivered in a Mitutoyo fitted case with adjustment wrench (key) and inspection certificate.
