Description
The Ferrous Field Gauge That Set the Standard for the L600S
The LE370 was Kett’s electromagnetic coating thickness gauge for operators measuring non-magnetic coatings on 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 LE370 Did
The LE370 used an electromagnetic probe to measure the thickness of paint, plating, lining, and other non-magnetic coatings on iron, steel, and other magnetic metals. Operators worked from one handheld unit with a single-contact probe that applied constant pressure for repeatable readings.
- Built for ferrous substrates: Electromagnetic measurement of non-magnetic coatings on steel and iron, covering plated, painted, and lined parts.
- Wide measurement range: Up to 2,500 µm, handling thick linings and 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 LE370 followed the LE330 series and was itself succeeded by the LE373, which added expanded data logging. The current production model for all of this work is the L600S. It keeps the 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 LE370 and the entire L3xx coating gauge line.

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