Handheld surface roughness tester for external surfaces and grooves


  • LCD with back-light
  • Dynamic test display: progress of cut-off length during testing
  • Li-ion rechargeable battery
  • Protection slide on pick-up
  • Auto-off after 90 seconds
  • Sound signal start-test-ready
  • Pocket-sized and economically priced!
  • Both Ra and Rz parameters in one instrument
  • Software calibration
  • Large measuring range suitable for most materials
  • Piëzo-electric pick-up stylus for external surfaces

Technical specs

Roughness parameterRa, Rz
Unitsμm / μinch
Measuring rangeRa: 0.05-10.0μm
Rz: 0.1-50μm
Cut-off lengths0.25mm, 0.8mm, 2.5mm
FunctionsDynamic display during testing,
sound signal start-test-ready,
auto-off 90 seconds, back-light LCD
CalibrationBy CAL function (on keypad)
Min. curvature of cylindrical surface40mm diameter (V-grooved base)
Tracing length6mm
Tracing speed1.0mm/sec
AccuracyConforms to ISO Class 3
Pick-up stylusPiëzo-electric
Tracer tipDiamond, radius 5μm ±1μm
Operating temperature0°C - 40°C
Power3.6V / Li-ion batteries
low battery indication
Charger6V DC
Dimensions110mm x 70mm x 24mm

Order details

Handheld surface roughness tester for external surfaces and grooves

Standard delivery

  • Main unit
  • Protection cover for tracer
  • Roughness test plate Ra
  • Charger
  • Soft bag
  • Carrying case
  • Manual
  • INNOVATEST certificate


UKAS certified roughness test plates