Mitutoyo 368-261 Holtest 3-Point Internal Micrometer 0.275-0.35 Inch Range

The Mitutoyo 368-261 Holtest is a precision 3-point/2-point internal micrometer designed for accurate bore measurement in the 0.275 to 0.35 inch range. This high-precision measuring instrument features an accuracy of ±0.0001 inch, making it ideal for quality control and inspection applications requiring exact internal diameter measurements.

Key Features:

• Measurement range: 0.275 to 0.35 inches
• Accuracy: ±0.0001 inch for precise dimensional inspection
• TiN-coated (Titanium Nitride) contact points for superior wear resistance and durability
• Carbide-tipped contact points provide exceptional hardness and long service life
• 3-point/2-point contact design ensures accurate centering and repeatable measurements
• Ratchet stop mechanism ensures consistent measuring force for reliable results
• Contact point geometry allows measurement to the bottom of blind holes

The Holtest series is renowned for its robust construction and ability to withstand demanding workshop environments. The combination of carbide tips and TiN coating provides excellent impact resistance while maintaining measurement accuracy over extended use. The ratchet stop feature eliminates operator-induced errors by standardizing the contact force applied during measurement.