Application guide
A paint thickness gauge provides meaningful results with correct calibration and repeatable measurement. Standardize the surface type, measurement points, and recording order instead of randomly touching the device to the panel.
Sample device
Record panel checks with Fe/NFe recognition, calibration films, and measurement memory.
Measurement results do not replace physical inspection findings.
Decision guide
The panel should be clean, dry, and free of loose dirt. Do not touch the probe to a metal surface when turning on the device. Check the battery and screen status of the product before measurement.
Decision guide
For steel panels, the Fe surface and film combination is used; for aluminum panels, NFe. The probe is placed perpendicular to the calibration film; the measurement is not transferred to the panel until the value stabilizes. Calibration should not be improvised beyond the films and substrates provided in the reference documentation.
Check the cleanliness of the calibration substrate.
Store the film surface without scratching.
After calibration, take a short control measurement on the reference surface.
Decision guide
Identify comparable points on each panel, away from edges and curves. Choose points as symmetrical as possible for doors, fenders, hoods, roofs, and trunks. The probe is held perpendicular to the surface and not removed until the device shows a stable audible/visual result.
Decision guide
A single high value on a panel is not definitive proof of paint or putty alone. Read minimum, maximum, and average values together; compare with adjacent panels, surface texture, color, and physical repair marks.
Decision guide
The HT616's memory facilitates per-panel recording. The report line should include the vehicle, panel, Fe/NFe type, measurement point, and value. This record makes the inspection process traceable without making paint measurement the sole basis for a decision.
Frequently Asked Questions
The probe makes contact perpendicular and controlled to the surface; the device's recommended probe force and user manual should be followed. Angled, moving, or dirty measurements can increase error.
No. Manufacturing, panel shape, and surface conditions can create differences. Meaningful interpretation is made through repeated measurements of comparable points on the same vehicle.
Related pages
Technical Resources
Technical information checked with sources on 2026-10-06.
Related products
The Habotest HT616 is a rechargeable device that measures paint/coating thickness on automotive bodywork and metal surfaces with automatic Fe/NFe recognition.