TR100 Plus Surface Roughness Tester


The PTc TR100 Plus  surface roughness tester is designed with an advanced micro-processor and has a dual OLED display of all test measurements in Ra or Rz.  Also featured is the ability to measure in grooves and recesses.


The new TR100 Plus  surface roughness tester is designed with an advanced micro-processor which performs data acquisition, data processing and display of all test measurements.  This instrument features an integrated processor, dual OLED display,  sensor, and  user-selectable roughness units of Ra or Rz.

In addition to measuring the surface roughness of flat, round and sloping planes, the TR100 Plus can measure grooves and recesses up to 3.1 x 1.2 in (80 x 30mm).


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


Technical Specifications

    • Roughness parameter:      Ra and Rz
    • Indicator:                 Dual OLED display
    • Tracing length:            6mm
    • Pick-up:                   Piezoelectric
    • Cut-off lengths:           0.25mm/0.8mm/2.5mm
    • Evaluation length:         1.25mm/4.0mm/5.0mm
    • Measuring range:          Ra: 0.05-10.0μm Rz: 0.1-50μm
    • Accuracy:                 +/-15%
    • Repeatability:             12%
    • Radius of the stylus point:  Diamond, Radius : 10±1μ
    • Angle of stylus point:       90°(+5°/ -10°)
    • Operating temperature:       0-40 ℃
    • Relative humidity:           90%
    • Power supply:               3.7V Lithium battery
    • Dimensions (L×W×H):       116 mm × 86 mm × 20 mm
    • Weight:                     200g


Standard Delivery

Main unit with built-in transducer

Calibration certificate

Roughness standard

USB cable for battery charging

Instruction manual

Carrying case

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