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Inclined Plane Coefficient of Friction Tester

Article No. 11406

C.O.F Tester Inclined Plane ASTM D 203

The Inclined Plane Tester used to measure the static coefficient of friction of various materials using a variable inclined plane and a sliding block (sold separately).

$4,996.00 excl. taxes & shipping cost


  • Motor-driven elevation
  • Simple, low-cost measurement
  • 0 to 80° angle
  • Applications: Paper, Plastic, Film, Foil

Technical Attributes

  • Data
    Instrument Size:Depth: 5 in. (130 mm)
    Height: 11 in. (280 mm)
    Width: 22 in. (560 mm)
    Weight16 lb. (7 kg)
    Electrical Requirements120V/60Hz or 240V/50Hz


Conforms to TAPPI T-815 and ASTM D202 with optional sliding blocks


  1. One piece of the sample is clamped to the inclined plane; another is clamped to the sliding block.
  2. The COF is measured on an inclined plane of approximately 0 to 60°.
  3. This incline is increased at a rate of 1.5±0.5° per second by an electric motor until the sample bearing block begins to slide.
  4. At this point, the inclined plane is locked and the angle can be read.
  5. The tangent of this angle is the coefficient of friction (COF).


Sliding Block ASTM TAPPI T-504
Sliding Block For Fiberboard 3.5
Sliding Block For Printed Paper
Sliding Block COF 1.5" x 3.5" 500g
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