Spi CMS220519015 Electronic Screw Thread Micrometer

Product Description

The SPI CMS220519015 is an electronic screw thread micrometer designed for precise measurement of external thread pitch diameters and screw thread forms. It covers a measurement range of 3 to 4 inches with a graduation of 0.0001 inches, making it suitable for high-accuracy inspection work in machine shops, manufacturing facilities, and quality control environments. The electronic operation delivers digital readout with a built-in data output port, allowing integration with SPC data collection systems. Interchangeable stainless steel anvils and a rotating spindle with ratchet thimble ensure repeatable contact force on each measurement. Licensed metrology technicians and precision machinists are the primary users of this instrument.

This micrometer is used in applications requiring thread measurement verification on externally threaded fasteners, shafts, and machined components within the 3 to 4 inch range. The positive lock nut holds the spindle in position during reading or transfer measurement. A digital counter display and data output capability make it well suited for production floor inspection as well as lab-grade metrology. The instrument ships in a plastic storage box and is calibrated to ASME B89.1.13 standards for thread-measuring micrometers.

Key Features

• Electronic digital readout with 0.0001 inch graduation for high-precision thread measurement
• Measurement range of 3 to 4 inches to cover larger-diameter threaded workpieces
• Interchangeable stainless steel anvils with rotating spindle for versatile thread pitch coverage
• Ratchet thimble provides consistent measuring force to reduce operator-to-operator variation
• Data output port supports direct connection to SPC and statistical measurement systems
• Calibrated to ASME B89.1.13 and ships with plastic storage box included

Compatibility

Designed as a standard electronic screw thread micrometer for use with interchangeable thread-measuring anvil sets suited to the 3 to 4 inch measurement range; no specific system integration compatibility was stated in the product data.

Installation Notes

This instrument is intended for use by trained metrology technicians and precision machinists familiar with thread measurement practices per ASME B89.1.13. Before use, verify calibration status and clean all anvil and spindle contact surfaces to remove debris or oils that can affect accuracy. Store the micrometer in its provided plastic box when not in use to protect the contact surfaces and digital components. Do not over-tighten the spindle against the workpiece; always use the ratchet thimble to apply consistent measuring force.