LH370 Non-Ferrous Coating Thickness Gauge

The Non-Ferrous Field Gauge That Set the Standard for the L600S

The LH370 was Kett’s eddy current coating thickness gauge for operators measuring insulating coatings on non-magnetic substrates. It is no longer manufactured. The information below is provided for owners of existing units and for buyers identifying the current replacement.

What the LH370 Did

The LH370 used an eddy current probe to measure the thickness of paint, anodizing, resin, and other insulating coatings on aluminum, copper, brass, and other non-magnetic metals. Operators worked from one handheld unit with a single-contact probe that applied constant pressure for repeatable readings.

• Built for non-ferrous substrates: Eddy current measurement of insulating coatings on aluminum, copper, brass, and other non-magnetic metals, including anodized and painted parts.
• Wide measurement range: Up to 1,200 µm, handling heavy coatings as well as thin films.
• 100 application memories: Stored calibration curves for repeated jobs, so an operator could recall a setup without recalibrating.
• On-board data and logging: A backlit dot-matrix display showed date, time, and lot data, with storage for 3,000 measurements and output to a PC for record keeping.

Why the L600S Replaces It

The LH370 followed the LH330 series and was itself succeeded by the LH373, which added expanded data logging. The current production model for all of this work is the L600S. It keeps the non-ferrous measurement that defined the 370 and adds a 2.7 inch full color display, storage for 50,000 records, and USB-C output for modern data transfer.

Looking for the current model? The L600S Coating Thickness Gauge replaces the LH370 and the entire L3xx coating gauge line.