Spi CMS160809211 Electronic Drop Indicator 1 in Digital

Product Description

The SPI CMS160809211 is a digital electronic drop indicator designed for precision dimensional measurement in machining, toolroom, and quality-control applications. It measures from 0.0000 to 1.0000 inches (0.00 to 25.00 mm) with an accuracy of 0.000200 inches (0.0050 mm) and a resolution of 0.000050 inches (0.0010 mm). The digital display provides direct readout in both inch and metric units, reducing reading error on the shop floor. The center lug flat back mounting style suits standard magnetic-base and indicator-holder setups used by machinists, metrologists, and QC inspectors.

This drop indicator is suited for surface measurement, runout inspection, parallelism checks, and fixture alignment tasks in residential machine shops, tool-and-die operations, and light manufacturing environments. The 3/8-inch stem diameter fits the most common indicator-holder collets and magnetic-base clamps found in typical shop setups. Its dual inch-metric readout makes it practical for work involving mixed drawing standards.

Key Features

• Digital display with 0.000050-inch (0.0010 mm) resolution for high-precision readout
• Accuracy of 0.000200 inches (0.0050 mm) across the full measurement range
• Full measurement range of 0.0000 to 1.0000 inches (0.00 to 25.00 mm)
• Reads in both inch and metric units for versatile application
• Center lug flat back mount compatible with standard magnetic bases and indicator holders
• 3/8-inch stem diameter fits common shop collets and clamps
• Powered by CR2032 battery for convenient field replacement

Compatibility

Designed as an OEM-style drop indicator compatible with standard 3/8-inch stem indicator holders, magnetic bases, and surface-gauge setups common in precision measurement and inspection work.

Installation Notes

Installation and use should be performed by a qualified machinist, metrologist, or QC technician familiar with dial and digital indicator setups. Secure the 3/8-inch stem firmly in the holder collet before taking measurements, and ensure the contact point is perpendicular to the measured surface to avoid cosine error. Handle the indicator carefully to avoid dropping or shocking the instrument, which can affect calibration. Replace the CR2032 battery when the low-battery indicator appears to maintain measurement accuracy.