Coating Thickness Measurement / CTM

CTMRing coating thickness

The CTM measures coating thickness on magnetic and non-magnetic base materials with high precision. It is user-friendly, sturdy and ideal for uncomplicated, reliable and non-destructive in-situ measurements

  • Ideal for condition based monitoring of piston rings in 2-stroke engines.
  • Measures non-magnetic coatings on magnetic base materials, such as chromium plated or plasma coated cast iron.
  • Also measures non-magnetic coatings on non- magnetic base materials, such as plastic coated stainless steel.
  • Automatically detects whether the base material is magnetic or non-magnetic.
  • Small enough to make reliable measurements even in hard to reach areas


Technical Specification

Measuring principle Magnetic induction & Eddy current
Thickness range 0 – 2000 μm
Accuracy Magnetic:
up to 75 μm ± 1.5 μm
75 to 1000 μm: < 2%
1000 to 2000 μm: < 3%
Eddy current:
up to to μm: ± 1 μm
50 to 1000 μm: < 2%
1000 to 2000 μm: < 3%
Operating temperature 5-60°C
Data memory 1000 measurements
Weight 132 G
Battery 2 X 1,5V
Dimensions/Weight 140 x 50 x 70mm/400g