Mitutoyo 543-852A Electronic Drop Indicator 1 Inch

Product Description

The MITUTOYO 543-852A is an electronic drop indicator designed for precise linear measurement in metrology and quality control applications. It measures from 0 to 1.0000 inches (0 to 25.40 mm) with an accuracy of plus or minus 0.0012 inches, making it suitable for dimensional inspection tasks that require reliable, repeatable readings. The indicator uses a straight connection type and applies a measuring force between 0 and 1.8 N to the contact point. Machinists, toolmakers, and quality technicians typically install and operate this instrument on surface plates, indicator stands, or transfer fixtures in machine shops and inspection labs.

This drop indicator suits applications in precision dimensional inspection on the shop floor or in a controlled metrology environment. It is appropriate for checking flatness, runout, concentricity, and part-to-part variation where electronic readout improves speed and documentation compared to a traditional dial indicator. The straight connection type accommodates standard indicator holder stems commonly found on magnetic bases and comparator stands used in general manufacturing and inspection workflows.

Key Features

• Measurement range of 0 to 1.0000 inches (0 to 25.40 mm) for versatile dimensional checks
• Accuracy of plus or minus 0.0012 inches for reliable inspection results
• Electronic readout eliminates analog dial interpretation errors
• Measuring force of 0 to 1.8 N minimizes deflection on delicate workpieces
• Straight connection type fits standard indicator holders and magnetic base stems

Compatibility

Designed as an OEM-style electronic drop indicator compatible with standard straight-stem indicator holders, magnetic bases, and comparator stands used in precision metrology and dimensional inspection setups.

Installation Notes

Installation and setup should be performed by a qualified machinist, toolmaker, or metrology technician familiar with indicator mounting practices. Secure the indicator stem firmly in the holder to eliminate stem slip before zeroing the instrument. Ensure the contact point travels perpendicular to the measured surface to avoid cosine error. Handle the spindle and contact point carefully to avoid shock loading, which can affect calibration.