Spi CMS160713021 Electronic Drop Indicator 1 in Digital

Product Description

The SPI CMS160713021 is a digital electronic drop indicator designed for precision measurement in machining, tooling, and quality control applications. It features a 1-inch maximum measuring range with a resolution of 0.0005 inches and an accuracy of 0.0012 inches, making it suitable for demanding inspection tasks. The digital display provides clear readouts in both inch and metric units. The center lug flat back mounting style allows secure installation on standard indicator stands, magnetic bases, and transfer gages. This instrument is powered by a CR2032 battery and includes a NIST Traceability Certification, supporting use in regulated calibration environments. Licensed machinists, toolmakers, and quality technicians are the primary users.

The SPI CMS160713021 is used in machine shops, production floors, and inspection labs where accurate surface and runout measurements are required. Its center lug flat back configuration is a standard fitment for drop indicator holders on surface plates, dial test setups, and CNC machine probing fixtures. The 3/8-inch stem diameter fits the majority of common indicator holders and clamp-style arms. The dual-unit display supports workflows that require switching between inch and metric measurements without recalculating. This indicator is appropriate for both setup verification and in-process quality checks on light to medium precision work.

Key Features

• Digital display with 0.0005-inch resolution and 0.0012-inch accuracy
• Measuring range: 0.00 to 1.0000 inches (0.00 to 25.00 mm)
• Center lug flat back for compatibility with standard indicator mounting hardware
• 3/8-inch stem diameter fits most indicator arms and holders
• Switchable inch and metric display modes
• CR2032 battery powered with NIST Traceability Certification included
• Measuring force of 1.50 N for use on sensitive workpieces

Compatibility

Designed for use with standard indicator stands, magnetic bases, and clamp-style arms that accept a 3/8-inch stem diameter drop indicator with a center lug flat back mounting configuration.

Installation Notes

Installation and use should be performed by machinists, toolmakers, or metrology technicians familiar with precision measurement equipment. Secure the 3/8-inch stem in the indicator holder before zeroing the instrument. Avoid lateral loading on the spindle during measurement, as side forces can affect accuracy and damage the mechanism. Handle the indicator carefully and store it in its case when not in use to protect the spindle and display.