Spi CMS220519039 Electronic Inside Micrometer 50-75mm

Product Description

The SPI CMS220519039 is an electronic inside micrometer designed for precise internal bore and hole measurements in the 50 to 75 mm range. It delivers an accuracy of plus or minus 0.00020 inches, making it suitable for close-tolerance inspection work in machining, manufacturing, and maintenance environments. The measuring faces are solid carbide for durability and wear resistance. A ratchet thimble provides consistent measuring pressure, and data output capability allows readings to be transmitted to a compatible data collection system. The unit ships calibrated and includes a lithium battery so it is ready to use out of the box.

This inside micrometer is suited for precision measurement applications in machine shops, quality control stations, and toolroom environments. It is used by machinists, metrology technicians, and maintenance professionals who require reliable internal diameter readings on bores, holes, and similar features. The 50 to 75 mm measurement range covers a common bore size found in industrial components, engine parts, and machined housings. It ships with a plastic storage and transport case to protect the instrument between uses.

Key Features

• Measurement range of 50.00 to 75.00 mm for internal diameter inspection
• Accuracy of plus or minus 0.00020 inches for close-tolerance work
• Solid carbide measuring faces resist wear over repeated use
• Ratchet thimble ensures repeatable, consistent measuring force
• Data output port for integration with SPC or data collection systems
• Ships factory calibrated with battery installed and plastic case included

Compatibility

Designed as a standalone electronic inside micrometer for general-purpose internal measurement applications; consult manufacturer documentation for compatible data output cables and collection systems.

Installation Notes

Inside micrometers are precision instruments and should be handled and stored with care to avoid damage to the measuring faces or spindle. Allow the instrument and workpiece to reach the same ambient temperature before measuring to avoid thermal expansion errors. Calibration should be verified against a known standard before use and rechecked periodically per your facility quality procedures. Battery replacement uses a 3V CR2032 lithium cell.