Mitutoyo 543-727B Electronic Test Indicator

Product Description

The MITUTOYO 543-727B is a battery-powered electronic test indicator designed for precise dimensional measurement in metrology, machining, and quality control applications. It covers a measurement range of 0 to 1.00 mm with an accuracy of 0.001 inch, making it suitable for inspecting part tolerances, runout, and surface variation. The unit features a 40 mm dial diameter for easy reading and a solid carbide contact point that resists wear during repeated gauging cycles. Power is supplied by a single SR44 battery, which is included. This indicator is a standard tool for machinists, quality technicians, and tool-and-die professionals who require reliable, repeatable electronic readout in shop or inspection environments.

The 543-727B is suited for use on machine tool spindles, surface plates, and inspection fixtures in both production and tool room settings. Its flat back profile allows secure mounting in standard indicator holders and magnetic bases. The solid carbide contact point makes it appropriate for use on hardened surfaces and abrasive workpiece materials. Typical applications include checking concentricity, parallelism, and flatness on machined components in light manufacturing and precision inspection work.

Key Features

• Measurement range: 0 to 1.00 mm
• Accuracy: 0.001 inch
• Resolution: 0.001 mm
• 40 mm dial diameter for clear readout
• Solid carbide contact point for extended wear life
• Battery-powered with SR44 battery included
• Flat back design compatible with standard indicator mounting hardware

Compatibility

Designed as an OEM-style electronic test indicator compatible with standard dovetail-mount indicator holders and magnetic base fixtures commonly used in machine tool and inspection applications.

Installation Notes

Installation and use of this indicator is typically performed by machinists, metrologists, or quality control technicians. Secure the indicator in a calibrated holder with appropriate clamping force to avoid housing distortion. Ensure the contact point is aligned perpendicular to the measurement surface to minimize cosine error. Replace the SR44 battery when low-battery indication appears to maintain measurement accuracy.