Time Instruments' TR100 Plus Surface Roughness Tester

Time Instruments' TR100 Plus Surface Roughness Tester incorporates an advanced micro-processor to measure and communicate surface roughness measurements. Pocket-sized and economically-priced, the TR100 Plus features dual OLED display presents readings in Ra or Rz roughness units, and battery life. The TR100 Plus assesses the roughness of flat, round, or sloping surfaces, and will measure roughness in grooves up to 3.1 x 1.2 inches (80 x 30 mm).

Features of the TR100 Plus include:

  • Metal frame, Handheld, Digital
  • Dual high-contrast OLED display
  • Two roughness parameters Ra and Rz available with the push of a button
  • USB output for recharging 
  • Measurements in both British and Metric unit mode
  • Calibration fully adjustable at the key-board on the front
  • Protective shield for protecting sensor from damage 
  • Adjustable cut-off lengths according to ISO / DIN standard
  • Measures flat, outer cylinder, and sloping surfaces
  • Measures metal and non-metal processing parts
  • Auto shutdown



Roughness parameters Ra & Rz
Display Dual OLED display
Tracing length 6 mm
Pick-up Piezoelectric
Cut-off lengths 0.25 mm / 0.8 mm / 2.5 mm
Evaluation Length 1.25 mm / 4.0 mm / 5.0 mm
Measuring Range Ra: 0.05 - 10.0 µm;  Rz: 0.1 - 50 µm
Accuracy + 15%
Repeatability  12%
Radius & angle of stylus point Diamond; Radius: 10 + 1 µm
Angle: 90° (+5° or - 10°)
Operating temperature 0 - 40 C
Relative humidity < 90%
Power supply 3.7 V Lithium battery
Dimensions & weight 116 x 86 x 20 mm;  200 g


TR100 Plus Surface Roughness Tester is supplied with:

TR100 Plus main unit, with built-in transducer;  roughness standard;  battery charger w USB cable;  manufacturer's calibration certificate, instruction manual, carrying case.

To download a copy of the data sheet, please click: Time TR100 Plus

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