Cork finishing

KSS Pendulum

The internationally accepted test method for skid resistance measurement on all surfaces where people or vehicles may slip or skid.  It also can be used for testing slip resistance of floors and sports surfaces.KSS Pendulum

The Pendulum is well established as a world leader in its field. Originally designed in the 1940s in the US, the instrument was further developed in the 1960s at the UK Transport Research Laboratory (TRRL) at the Department of Scientific and Industrial Research - a British Government organization concerned with studying problems that arise in designing, building, maintaining and using public highways.

Today it is the industry standard for a vast array of surface testing applications,  including the testing of wooden decking. It is used in accident investigations, both traffic and pedestrian and Litigation investigations.

The instrument which gives a direct reading, gives a measure of the friction between a skidding tyre and wet road surface. It provides the Highway Engineer with a practical means of obtaining reliable scientific evidence on which to take the appropriate measures to reduce skidding.

Satisfies the following standards:

BS 812 Pt. 114: 1989
Method for the Determination of the Polished Stone Value (PSV)

BS EN 1097-8 : 2000
Tests for Mechanical and Physical Properties of Aggregates. Determination of Polished Stone Value.

BS 7044 : 1990 : section 2.2
Artificial Sports Surfaces : Person/Surface Interaction.

BS 7188 : 1989
Impact Absorbing Playground Surfaces.

BS 8204 : Part 3 : 1993
In situ Flooring Part 3. Screeds, Bases and In Situ Floorings. Polymer Modified Cementitious Levelling Screeds and Wearing Screeds. Code of Practice.

ASTM E303 : 93
Standard Test Method for Measuring the Surface Frictional Properties using the British Pendulum Tester.

EN 13036-4 : 2003
Road and Airfield Surface Characteristics. Test methods. Method for Measurement of Slip/Skid Resistance of a Surface. The Pendulum Test.

BS EN 13748-1:2004
Terrazzo tiles. Terrazzo tiles for internal use

BS EN 13748-2:2004
Terrazzo tiles. Terrazzo tiles for external use

EN 14231 : 2003
Natural Stone Test Methods – Determination of Slip Resistance by Means of the Pendulum Tester.

BS EN 13845:2005
Resilient Floor Coverings. Polyvinyl chloride floor coverings with particle based enhanced Slip Resistance

AS 3661.1:1993
Australian Standard – Slip Resistance to pedestrian surfaces


To ensure consistency and maintenance of standard, all instruments are calibrated and approved before supply to customers. All instruments are manufactured in our factory in Weston-super-Mare, United Kingdom.



maintenance equipmentPortable Skid Resistance Tester Kit comprising Tester, Instrument Carry Case; Tool Roll Holder with 3 x Allen keys, 1 spanner, 1 brush, 1 hook wrench, 1 perspex setting gauge, 1 water spray bottle; Calibration certificate and rubber conformity certificate; 4 sliders of your choice (PSV  – Laboratory Testing, Slider 55 (TRL) – Road Testing or Slider 96 (four ‘S’) – Pedestrian slip testing) and the first recalibration free of charge if returned to us within 12 months of purchase.

  • Compact, easily transported & used in the field
  • Can be used in remote locations, independent of any vehicle
  • Enclosed bearings & working parts for protection against wear and contamination
  • Heavy-duty frame construction
  • Adjustable feet on base



The Pendulum measures the frictional resistance between a rubber slider mounted on the end of a pendulum arm and the test surface. This provides highway and flooring engineers with a routine method of checking the resistance of wet and dry surfaces to slipping and skidding. The pendulum arm has a spring-loaded rubber slider on the pendulum foot. The Pendulum device is placed on the portion of the road/floor surface to be tested. It is then levelled, and the height of the centre of suspension of the pendulum is adjusted to a fixed value which is read on a special gauge. The pendulum is then released from its horizontal position, to swing down freely until the rubber slider contacts the test surface. As the slider travels across the surface for a fixed distance, the pendulum is slowed and a frictionally-constrained pointer affixed to the pendulum arm measures the highest point in the pendulum arc. The position of the pointer is then read on a measuring arc graduated from 0 to 150. Pointer readings indicate the resistance to skidding of the test surface.


Dimensions (include carrying case): 72 x 72 x 32 cm.

Shipping wt. 31.0 kg