A Digital Coating Thickness Gauge with External Probe is a precision measuring instrument designed to measure the thickness of coatings on metal surfaces. The external probe provides convenient access to difficult-to-reach, recessed, curved, or confined areas.

The external probe allows users to take measurements in areas where the main instrument body cannot be positioned easily. It provides greater flexibility and improved accessibility during inspection.

Depending on the measurement method, suitable instruments can measure coatings on ferrous substrates, such as steel and iron, and non-ferrous substrates, such as aluminum, copper, and zinc.

Yes. The gauge measures coating thickness without damaging or removing the coating, making it suitable for quality control and inspection applications.

Many models can measure coatings on curved surfaces, but the accuracy depends on the probe design, surface curvature, and instrument specifications. Always follow the manufacturer's recommended measurement conditions.

Accuracy may be influenced by surface roughness, substrate thickness, coating composition, curvature, probe positioning, substrate material, and calibration conditions.

It combines the convenience of digital measurement with the flexibility of a remote external probe, making it an excellent solution for accurate and efficient coating inspection in challenging measurement locations.