Hardness Tester
Ultrasonic Thickness gauge



The QS3 B is a very simple and accurate thickness gauge used to measure metals without coatings, plastics, acrylics, ceramics and glass among other materials.

It features Auto 1 point calibration (no Cal key), large numbers, low alarm, a sound velocity chart, a memory to store 5000 readings that can be viewed on the unit screen, and more.



  • Pulse-Echo
  • Range:
    0.6 to 500mm             0.025 to 19.999in Depending on transducer and material
  • Resolution:
    0.01mm / 0.001in


  • Metric
  • Imperial


  • Auto, 1 point (no Cal key) Calibrate using the test block on the front panel



  • Ajustable gain
  • Coupling indicator
  • Capture minimum
  • On screen materials velocity chart


  • Low, user defined
  • Alarm types
    Visible: Flashing backlight and irregular digits
    Audible: Intermitent beep

Graphic LCD Display

  • LCD 128x64 pixels
  • LED backlight illumination
    (ON, OFF, Auto)
  • Digits:
    17mm / 0.66in tall
  • Adjustable digital contrast



  • Type Lemo "00" connectors for transducer


Data Logger

  • 5000 readings that can be viewed on the unit screen


  • English
  • Spanish
  • Portuguese


  • 5 year limited on electronics
  • 6 months on accessories

Front Panel

  • Touch-Sense with sensitivity adjustment
  • No mechanical parts
  • Auto pressure recognition
  • Auto scrolling recognition


Power Supply

  • 2 x AA 1.5v Alkaline
  • 2 x AA 1.2v Ni-MH Rechargeable
  • Easy slide battery compartment cover



  • H: 117mm / 4.60in
  • L: 78.74mm / 3.10in
  • W: 24mm / 0.94in


  dmq QS3 B standard configuration  


  dmq QS3 B electronic unit  
  dmq 5MHz standard transducer  
  Coupling gel  
  Printed user manual  
  High impact carrying case  
  Certificate of conformity  
DP10 dp300

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