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SR100 Surface Roughness Tester 20950

The Starrett SR100 Surface Roughness Tester is powerful, accurate and easy to use. It is ideal for checking large components, structures, auditing batch prior to shipment and production line process control. W/Calibration Std; Operation Guide; Batteries; and Case.

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  • Large LCD window
  • Measures Ra at the touch of a button
  • In addition to basic roughness parameters Ra and Rz, also measures advanced Rp, Rv and Rt parameters
  • Five second cycle time
  • Result saved until the next measurement is taken
  • Switches between inch and metric mode without remeasuring
  • Use right out of the box – little or no operator training required
  • Automatic shut-off after five minutes of inactivity
  • Configured with the most common industrial settings to ensure correlation between multiple operators (see specifications)
  • Simple and reliable calibration routine
  • Uses standard off-the-shelf calculator type batteries (CR2450) with a minimum life of 5, 000 measurements
  • Includes SR100 two-piece assembly, calibration standard, batteries, operation guide and a carrying case
  • SR100 uses an infra-red (IrDA) link between the upper and lower units to provide remote, cable free operation up to a distance of 40"


  • Accuracy (in): 5% of reading + 4µin
  • Cutoff Lengths: 0.03" ± 15%
  • Filter: 2CR
  • Measuring Range: Ra: 1600µin Rz, Rv, Rp, Rt: 7800µin
  • Pick-up Stylus: Piezoelectric
  • Roughness Parameter: Ra, Rz, Rv, Rp, Rt
  • Tracer Tip: Diamond, Radius 200µin
  • Tracing Length: 0.2"
  • Tracing Speed: 0.08"/sec


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