Spi CMS160713013 Electronic Drop Indicator 0.5in

Product Description

The SPI CMS160713013 is a digital electronic drop indicator designed for precision dimensional measurement in machining, metrology, and quality control applications. It delivers a resolution of 0.000100 inches (0.0020 mm) and an accuracy of 0.000300 inches (0.0080 mm), making it suitable for tight-tolerance inspection work. The indicator features a digital display and reads in both inch and metric units. Measurement range runs from 0.00 mm to 0.5000 inches (12.70 mm). NIST traceability certification is included, supporting documentation requirements in calibrated shop environments. Licensed metrology technicians and precision machinists are the primary users.

This drop indicator is used in toolroom, production, and inspection settings where repetitive measurement or surface comparison is required. It mounts via a center lug flat back configuration, which is standard for drop indicator holders and magnetic base arms used on surface plates, milling machines, and grinding fixtures. The 3/8 inch stem diameter fits common universal holders. The unit is powered by a CR2032 battery, eliminating the need for external power in portable or bench-top setups.

Key Features

• Digital display with inch and metric readout switching
• Resolution of 0.000100 inches (0.0020 mm) for fine measurement tasks
• Accuracy of 0.000300 inches (0.0080 mm)
• Center lug flat back mount for compatibility with standard drop indicator holders
• 3/8 inch stem diameter fits universal magnetic base arms and holders
• NIST traceability certification included for calibrated inspection documentation
• CR2032 battery powered for cordless bench or field use

Compatibility

Designed for use with standard drop indicator holders and magnetic base arms that accept a 3/8 inch stem diameter and center lug flat back mounting configuration.

Installation Notes

Metrology technicians and toolroom machinists typically install and zero this indicator. Before mounting, ensure the holder arm and lug clamp are securely tightened to prevent indicator drift during measurement. Set the indicator to zero on a known reference surface before taking readings. Do not exceed the stated measuring force of 1.50 N, as excessive contact force can affect accuracy and shorten spindle life.