Pendulum Skid Resistance Tester

The Cooper Pendulum Skid Resistance Tester is one of the best portable skid resistance testers in the world.

The Cooper Pendulum Skid Tester CRT-PENDULUM is high quality skid resistance testing equipment. Originally designed in the 1940s in the US, the instrument was further developed in the 1960s at the UK Transport Research Laboratory for the testing of road surfaces. The CRT-PENDULUM measures the frictional resistance between a rubber slider mounted on the end of a pendulum arm and the test surface. This provides highway engineers with a routine method of checking the resistance of wet and dry surfaces to slipping and skidding, both in the lab and on site. It is based on the Izod principle: a pendulum rotates about a spindle attached to a vertical pillar. At the end of the tubular arm a head of known mass is fitted with a rubber slider. The pendulum is released from a horizontal position so that it strikes the sample surface with a constant velocity. The distance travelled by the head after striking the sample is determined by the friction of the sample surface. A reading of Skid Resistance is obtained.

We now offer Slip Testing Service throughout the UK. Contact us for expert independent slip risk assessment.


  • EN 1097-8:2009
  • EN 1436:1997
  • EN 13036-4:2003
  • ASTM E303-93
  • AS/NZS 4586:1999
  • BS 812 Pt 114
  • BS 6077 Pt 1
  • BS 7044
  • BS 7188
  • BS 8204
  • BS 7976
  • Key Features

  • Designed for laboratory and in situ road surface testing
  • Dispatched calibrated to EN1097-8 (accredited under ISO 9001:2000)
  • Low friction arm, and lightweight pointer
  • Comes with integral ‘F’ scale for use with small slider set for 76mm slide length. (PSV test)
  • Repeatable and reproducible
  • Supplied with robust carrying case
  • Made in the United Kingdom

  • Key Uses

  • Assessment of surface friction and skid resistance properties
  • Testing of aggregates in the PSV (Polished Stone Value) test
  • Testing of new road surface materials under development
  • Testing of pedestrian walkways
  • Traffic accident investigations
  • Litigation investigations
  • Testing of pavers in the Flat Bed Polisher

  • Dimensions mm (W x D x H) 700 x 300 x 700
    Volume (packed) cubic metres 0.15
    Weight Kg 30
    Calibration & Maintenance

    Calibration, Annual Service and Maintenance Contracts are available for this device. Please enquire for further details. Note: This device should be checked and calibrated annually.

    Accessories are not included in the price of main device (unless stated otherwise) and may be purchased separately if required.

    Photo? N.A CRT-PEND-S886
    Base Plate
    Set of 3 Spreader Feet
    Photo? N.A CRT-PEND-885/1050
    1.25” Rubber Mounted PSV Slider
    Photo? N.A CRT-PEND-885/1060
    3.00” Rubber Mounted TRL (55) Slider
    Photo? N.A CRT-PEND-885/1070
    3.00” Rubber Mounted Four S (96)
    Photo? N.A CRT-PEND-885/1431
    3.00” Rubber Mounted CEN Slider
    Photo? N.A CRT-PEND-CAL1
    First traceable calibration
    Photo? N.A CRT-PEND-885/1024
    Tool Kit (included with main item)
    Pendulum Instrument case CRT-PEND-885/1200
    Pendulum Instrument case (included with main item)
    Please complete the form below to download the datasheet