Spi 10-710-2 Inside Micrometer Set 0.275-0.500 in

Product Description

The SPI 10-710-2 is a mechanical inside micrometer set designed to measure internal bores and diameters with precision across a range of 0.2750 to 0.5000 inches. The set features solid carbide measuring anvils for durability and wear resistance, and uses a ratchet stop thimble mechanism to deliver consistent, repeatable measuring force. Three heads are included alongside one extension rod, two setting rings, spanner wrenches, and a fitted wooden case. This instrument is intended for use by machinists, metrology technicians, quality control professionals, and precision tool users who require accurate inside measurements in production or inspection environments.

This inside micrometer set is suited for measuring bores, holes, and internal features in manufacturing, toolroom, and inspection applications. The self-aligning and self-centering design simplifies positioning within tight bores, reducing operator error during measurement. The included extension rod extends the usable gauge depth up to 4.0000 inches, while the 0.3500 inch and 0.5000 inch setting rings allow for accurate field calibration. The complete kit ships ready to use from the wooden storage case.

Key Features

• Solid carbide measuring anvils for extended service life and accurate contact
• Ratchet stop thimble provides consistent measuring force across readings
• Self-aligning and self-centering anvil design for repeatable bore measurements
• Includes one extension rod, allowing gauge depth up to 4.0000 inches
• Two setting rings (0.3500 inch and 0.5000 inch) included for field calibration
• Complete kit stored in a fitted wooden case with spanner wrenches

Compatibility

Designed for use as a precision inside micrometer set for internal bore and diameter measurement applications within the 0.2750 to 0.5000 inch range.

Installation Notes

This instrument should be handled and stored by qualified metrology or toolroom personnel following established measurement practices. Before use, verify calibration against the included setting rings and allow the tool and workpiece to reach the same ambient temperature to minimize thermal expansion error. Keep the measuring surfaces clean and free of debris, and store in the provided wooden case when not in use to protect the carbide anvils and precision components.