The RTD-100 Surface Roughness Gauge (Profilometer) is designed for users that require a basic gauge that can handle the rigours of a workshop. 

Applications for use include quality control, to ensure that machined and finished surfaces meet the specification and fit for purpose.  

The easy to read OLED display can be read in bright environments without light interference. The metal case provides durability and the size is compact for portability.  Also featured is an integrated probe that is protected within the casing, which makes the RTD-100 best suited for flat surfaces or large curves where there is ample clearance to fit the device.

The unit is easy to operate and can be calibrated using the included specimen. The sensitive probe traces the surface and converts the measurements into Ra or Rz.  The measuring range for Ra is 0.05µm - 10µm and Rz is 0.1µm - 50µm.

Ideal for basic roughness testing.  For further assistance please contact us



  • Compact and easy to use
  • Rugged full metal shell design
  • DSP chip for high-speed data processing
  • Clear bright OLED dot matrix screen
  • Built in rechargeable battery
  • Automatic shutdown and power saving function
Standard Kit includes the main unit, the calibration specimen and support, calibration certificate, USB charging cable and power adapter.
Maximum Travel 6mm
Accuracy ±10%
Parameter Ra (0.05µm-10µm)  Rz (0.1µm-50µm)
Sampling Length "L" 0.25mm, 0.8mm, 2.5mm
Evaluation Length 1.25mm, 4mm, 5mm
Power Built-in rechargeable battery
Battery Life 20 Hours continuous work
Dimensions 106mm x 70mm x 24mm
Weight 200 grams






Model # kr100
Shipping Weight 1.3000kg
Shipping Width 0.350m
Shipping Height 0.100m
Shipping Length 0.220m
Shipping Cubic 0.007700000m3

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