Spi CMS220519048 Electronic Inside Micrometer

Product Description

The SPI CMS220519048 is an electronic inside micrometer designed to measure internal bore diameters with high precision. It covers a measuring range of 0.350 to 0.425 inches (8.00 to 10.00 mm) and delivers an accuracy of plus or minus 0.00010 inches. The tool features a ratchet stop thimble for consistent measuring pressure and an extension rod design that allows reach into deeper bores. It outputs data digitally, making it compatible with SPC or data-logging systems. Calibration is included from the factory. Machinists, tool and die makers, quality control technicians, and precision measurement professionals are the primary users of this instrument.

This inside micrometer is suited for inspection and production environments where bore measurement accuracy is critical. The 8.00 to 10.00 mm range makes it appropriate for small-bore applications in automotive, aerospace, and general machining. The maximum extension rod length of 4 inches and a gage depth of 53.50 mm allow measurement in recessed or stepped bore features. The alloy steel measuring faces resist wear under repeated use in shop environments.

Key Features

• Measuring range: 0.350 to 0.425 inches (8.00 to 10.00 mm)
• Accuracy: plus or minus 0.00010 inches
• Ratchet stop thimble for repeatable measuring force
• Extension rod type with maximum extension of 4 inches
• Data output compatible with SPC and external logging systems
• Alloy steel measuring faces for durability
• Factory calibrated; includes lithium CR2032 battery

Compatibility

Designed as a precision inside micrometer for small-bore measurement applications in the 8.00 to 10.00 mm range; compatible with standard SPC data collection interfaces that accept electronic micrometer output.

Installation Notes

Inside micrometers are installed and used by metrology technicians, machinists, and quality control personnel. Before use, verify calibration against the included setting ring (0.3500 inches diameter). Handle measuring faces with care and avoid dropping the instrument, as impact can affect calibration. Store in the provided case when not in use to protect the measuring surfaces and electronics.