Mitutoyo 542-188 Digital Linear Gage 0.4 Inch 8mm Barrel

Product Description

The MITUTOYO 542-188 is a digital remote display linear gage designed for precise displacement measurement in industrial and metrology applications. It features a compact 8mm barrel diameter and an optical photoelectric encoder that delivers a resolution of 0.0001mm, making it suitable for high-accuracy dimensional inspection on production floors or in quality labs. The gage head carries an IP66 protection rating, allowing it to resist coolant splash and fine particulate contamination. A linear ball bearing in the spindle unit ensures smooth, repeatable travel over the full 0.4-inch (10mm) range. Licensed metrologists, quality technicians, and precision machining professionals are the primary installers and operators of this instrument.

The 542-188 is built for integration into automated or semi-automated gauging systems via its TTL output signal, which simplifies communication with PLCs, data acquisition systems, and remote display units. Its slim, robust displacement probe form factor fits into tight fixture arrangements where larger probes cannot reach. Typical applications include in-process dimensional checking, final inspection of machined components, and comparative gauging in both light manufacturing and tool-room environments. The 2-meter cable provides workable reach between the gage head and a remote display or controller without excess cable management burden.

Key Features

• Optical photoelectric encoder provides 0.0001mm resolution for high-accuracy displacement measurement
• IP66-rated gage head resists coolant and particulate ingress in production environments
• Linear ball bearing in the spindle unit ensures smooth, repeatable probe travel
• TTL output enables direct communication with PLCs, remote displays, and data acquisition systems
• Compact 8mm barrel diameter fits tight fixture and gauging station arrangements
• Heavy-duty, shock-resistant construction suited to continuous industrial use

Compatibility

Designed as an OEM-style digital linear gage head for use with compatible MITUTOYO remote display units and gauging systems that accept TTL signal input.

Installation Notes

Installation and setup should be performed by a qualified metrology technician or precision instrument specialist familiar with linear gage systems. Ensure the host fixture or mounting bracket is clean and free of burrs before seating the 8mm barrel to avoid misalignment errors. Power down any connected display unit or data acquisition system before connecting or disconnecting the gage cable. Avoid side-loading the spindle beyond the specified lateral measuring force, as this can affect accuracy and bearing life over time.