Gap measuring device

The newly developed measuring device works with a tactile sensor that can be inserted into narrow gaps down to less than 0.5 mm. It thus replaces feeler gauges and spies in a wide range of applications where previously only qualitative tests could be carried out and quantitative measured values had to be determined by lengthy approach.

Spaltmessgerät gapMaster
Spaltmessung Ventilator

Compared to capacitive and optical gap measuring methods, the gapMaster® offers decisive advantages. On the one hand, its measuring lance can penetrate into very deep, optically inaccessible gaps, and on the other hand it is independent of the test specimen material due to tactile measurement with very low measuring forces. These features make the gapMaster® a superior gap measuring instrument in many fields of application.

The mobile, very handy device offers on its 7″ screen all information that is important for the measuring process and its evaluation. Test plans can be loaded and the measured data can be stored temporarily and transmitted to a central office via Wifi.
Spaltmessgerät gapMaster neue Version
Spaltmessung Sensorvielfalt

For measurements on fans and turbines, the gapMaster® offers special sensors that can be used to quickly and accurately measure gaps between the rotor and housing with a repeatability of up to 0.01 mm. In the automotive sector, too, the interchangeable gap sensor is designed differently depending on the application, so that every measuring task can be solved optimally. For an overview of the available sensors click here.

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gapMaster®: Quick-Check


  • measuring possibilities in
    difficult to access areas
  • low measuring forces
  • material indipendent,
    quantitative measurements
  • Gap progressions can be

Fields of application

  • Sheet metal processing
  • Plastics industry
  • Wood processing
  • Automotive- und Aeroengineering
  • Fans and turbines
  • Function gaps of
    rotating maschines
  • Cutting kerfs
  • Gaps between test specimen and gauges
  • Assembly gap on bodywork and interior
Spaltmessgerät gapMaster

Sensor variants

  • Swordsensor for standard applications
  • Impeller sensor for fans and turbines
  • Slide shoe sensor for automatic tests
  • Special shapes for your individual application

Technical data

  • Gap width 0,2 to 18 mm
  • Resolution up to 0,002 mm
  • Accuracy up to 0,01 mm
  • Sensor width 6 to 20 mm
  • Sensor length 50 to 170 mm –
    optional up to over 500 mm