Spi CMS160726117 Inside Micrometer Set 4-piece

Product Description

The SPI CMS160726117 is a mechanical inside micrometer set designed for precision internal bore and diameter measurement in industrial and toolroom environments. The set includes one extension rod, two setting rings, and a spanner wrench, all stored in a fitted case. Measurement starts at a minimum of 0.8000 decimal inches, with an accuracy rating of 0.00020 decimal inches. The ratchet stop thimble provides consistent measuring pressure, and carbide measuring surfaces deliver long-term wear resistance. Self-centering contact points support repeatable, accurate readings without manual adjustment. This set is calibrated and ready for use out of the box.

This inside micrometer set is suited for machinists, toolroom technicians, and quality control professionals working in manufacturing, maintenance, or inspection environments. It is well-matched to applications requiring precise internal measurements where a standard caliper or telescoping gauge lacks the resolution needed. The maximum extension rod length of 6.0000 decimal inches extends the measurement range for larger bore applications. The chrome finish resists corrosion and supports easy reading in shop conditions.

Key Features

• Ratchet stop thimble ensures consistent measuring pressure for repeatable results
• Carbide measuring surfaces resist wear for long service life
• Self-centering contact points reduce user error and improve measurement accuracy
• Calibrated at the factory — suitable for immediate use in quality-critical applications
• Includes one extension rod, two setting rings, and a spanner wrench in a fitted case
• Chrome finish provides corrosion resistance and clean visual contrast for reading

Compatibility

Designed as an OEM-style mechanical inside micrometer set for use in general industrial toolroom, manufacturing, and quality control inspection applications requiring high-resolution internal bore measurement.

Installation Notes

Inside micrometers are typically set up and used by machinists or metrology technicians following shop calibration procedures. Before use, verify the instrument against the included setting rings and zero accordingly using the spanner wrench. Handle the carbide measuring surfaces with care to avoid damage that could affect accuracy. Store the instrument in the fitted case when not in use to protect the measuring surfaces and extension rod from contamination or impact.