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With this Coating Thickness Measuring Device, layer thicknesses on metallic surfaces can be reliably determined. The Coating Thickness Measuring Device has a measuring range of 1500 µm. This means that the Coating Thickness Measuring Device is used, for example, in a paint shop, for incoming goods inspection or for an expert. With the Bluetooth interface on the Coating Thickness Measuring Device, all data can be transferred to a mobile iOS or Android device and exported as a CSV, PDF or TXT file. A live view with analysis of the measured values ​​is also possible via the free app with the Coating Thickness Measuring Device. 
In addition to the Bluetooth interface, the Coating Thickness Measuring Device has a micro USB interface. All data can also be transferred to the PC and analyzed via this interface in the Coating Thickness Measuring Device. Another special feature of this interface is that the Coating Thickness Measuring Device can also be operated without batteries via this interface. As a result, many measurement processes are no longer dependent on the battery charge level. 


  1. Micro USB and Bluetooth interface
  2. Calibration foils included
  3. Adjustable alarm gene values 
  4. Backlit display
  5. Data storage for up to 600 measured values
  6. Measuring range up to 1500 µm

Coating Thickness Measuring Device CT 21BT

  • Measurable substrates Fe
    probe external
    measuring range 0… 1500 µm
    resolution 0.1 µm (in the measuring range 0… 99.9 µm)
      1 µm (in the measuring range 100… 1500 µm)
    accuracy ± (1 µm + 2% of the layer thickness)
    units µm, mil
    Smallest curvature convex 5 mm, concave 5 mm
    Smallest measuring area 10 x 10 mm
    Minimum thickness of the substrate    0.4 mm
    interface Bluetooth, micro USB
    memory 10 groups with 60 measurements each
    power supply 2 x 1.5 V AA batteries, 5 V USB interface
    Environmental conditions -10… 50 ° C, 10… 85% RH
    Dimensions 126 x 69 x 35 mm (without sensor)
    Weight approx. 97 g (without batteries)
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