Minitest 650

The rugged coating thickness gauge MiniTest 650 follows its long-time proven predecessor model MiniTest 600 in the line of gauges with a fixed external probe offering measurement of all non-magnetic coatings on steel and all insulating coatings on non-ferrous metals. It was especially designed to work in rough environments as well as on on abrasive surfaces, e.g. shot-blasted steel, plasma spray coated surfaces.


  • Non-destructive coating thickness measurement Non-magnetic coatings, e.g. paint, enamel, chrome, zinc on ferromegnetic substrates (e.g. steel).
  • Insulating coatings, e.g. paint, anodizing on non-ferrous metals (e.g. aluminium, copper).

Performance features

  • Coating thickness measurement up to 2 or 3 mm.
  • Universal probe offering automatic identification of the substrate for quick measurements on steel and non-ferrous metals.
  • Wear-resistant probe tips with practically unlimited durability.
  • USB-interface to transfer measuring data to a PC.
  • Statistical evaluation of readings.


  • MiniTest 650 F
    For coating thickness measurement on ferro-magnetic substrate(steel) maximum coating thickness 3 mm.
  • MiniTest 650 N
    For coating thickness measurement on conducting, non-ferrous substrate (non-ferrous metals, e.g. aluminium, copper, etc.) maximum coating thickness 2 mm.
  • Mini Test 2100
    for coating thickness measurement on ferro-magnetic and non-ferrous substrates, automatic identification of substrate type maximum coating thickness 2 mm.

Measuring principle

  • Magnetic induction and eddy current principle according to ISO 2808