Mitutoyo 543-712B Electronic Drop Indicator 0.5 in

Product Description

The MITUTOYO 543-712B is an electronic drop indicator designed for high-precision dimensional measurement in machining, metrology, and quality control environments. It delivers a measurement range of 0.0000 to 0.5000 decimal inch (0 to 12.70 mm) with an accuracy of +/-.001 decimal inch (0.02 mm). The unit features a straight connection type and applies a measuring force of 0.9 +/- 0.1 N, making it suitable for delicate surface contact applications. Machinists, metrologists, and toolroom technicians typically install and operate this indicator on magnetic-base holders, surface plates, or CMM fixtures for runout, flatness, and comparative measurement work.

This indicator is used in precision inspection setups across manufacturing, tooling, and quality assurance environments. It is suited for both shop-floor and laboratory conditions where repeatable, electronic readout of small dimensional variations is required. The straight connection style integrates with standard indicator holders and dovetail-style mounting arms commonly found in machine shops and inspection stations. No calibration is included with this unit at time of purchase.

Key Features

• Measurement range: 0.0000 to 0.5000 decimal inch (0 to 12.70 mm)
• Accuracy: +/-.001 decimal inch (0.02 mm)
• Measuring force: 0.9 +/- 0.1 N for low-contact-force applications
• Straight connection type for compatibility with standard indicator holders
• Electronic readout eliminates analog dial interpolation errors
• Not calibrated — field calibration or third-party calibration service required if traceable measurement is needed

Compatibility

Designed for use with standard dovetail and stem-mount indicator holders accepting a straight-connection drop indicator. No specific compatible model numbers were provided in the product data.

Installation Notes

This indicator is typically set up by machinists or metrologists using a magnetic base or indicator holder mounted to a surface plate, mill table, or inspection fixture. Ensure the spindle axis is aligned perpendicular to the measured surface to avoid cosine error. Secure the mounting arm firmly before zeroing the indicator to prevent drift during measurement. If traceable accuracy is required for quality documentation, arrange for calibration before use.