Spi CMS160713019 Electronic Drop Indicator 2 in

Product Description

The SPI CMS160713019 is a digital electronic drop indicator designed for precision dimensional measurement in machining, quality control, and metrology applications. The unit offers a maximum measurement range of 2 inches (50.00 mm) with a resolution of 0.000050 inches (0.0100 mm) and an accuracy of 0.001200 inches (0.0200 mm). The digital display provides direct inch or metric readout, eliminating the analog dial interpretation common on mechanical indicators. The center lug flat back mounting style suits a wide range of indicator holders and magnetic base setups used in machine shop and inspection environments. Machinists, toolroom technicians, and quality inspectors are the primary users.

This indicator is suited for surface runout checks, part height verification, and fixture setup on mills, lathes, surface plates, and CMM fixtures. The unit reads in both inch and metric units, making it adaptable for shops working to mixed drawing standards. The 3/8-inch stem diameter fits the most common collet-style indicator holders. Measuring force is rated at 1.50 N, which is appropriate for contact measurement on finished surfaces without causing workpiece marking. The included NIST traceability certification supports documented quality systems and audit requirements.

Key Features

• Digital display with inch and metric readout selectable
• Resolution of 0.000050 inches (0.0100 mm) for fine measurement tasks
• Accuracy of 0.001200 inches (0.0200 mm)
• Center lug flat back for broad compatibility with standard indicator holders
• 3/8-inch stem diameter fits common collet-style holders and magnetic bases
• NIST traceability certification included for quality system compliance
• Powered by CR2032 battery

Compatibility

Designed for use with standard indicator holders, magnetic bases, and fixture arms accepting a 3/8-inch stem diameter drop indicator.

Installation Notes

Installation is performed by machinists or metrology technicians using a collet-style indicator holder or magnetic base. Secure the 3/8-inch stem firmly before taking measurements to prevent indicator movement during contact. Ensure the spindle axis is aligned perpendicular to the measured surface to avoid cosine error. Power down or zero the indicator before repositioning to a new measurement point to maintain reading integrity.