该方法涵盖了使用英国摆锤式防滑测试仪测量表面摩擦特性的程序。附录中包含了测试仪的校准方法。英国摆锤测试仪是一种动态摆锤冲击式测试仪，用于测量将橡胶滑块边缘推过测试表面时的能量损失。该测试仪用于实验室和现场平面测试，以及从加速抛光轮测试中测量弯曲实验室试样的抛光值。平坦表面的英国摆锤（测试仪）号BPN测量值和加速抛光轮试样的抛光值代表使用本文所述仪器和程序获得的摩擦性能，不一定与其他滑动度测量设备的结果一致或相关。

This method covers the procedure for measuring surface frictional properties using the British Pendulum Skid Resistance Tester. A method for calibration of the tester is included in the Annex.The British Pendulum Tester is a dynamic pendulum impact-type tester used to measure the energy loss when a rubber slider edge is propelled over a test surface. The tester is used for laboratory as well as field tests on flat surfaces, and for polish value measurements on curved laboratory specimens from accelerated polishing wheel tests.The value measured, British Pendulum (Tester) Number, BPN, for flat surfaces and polish values for accelerated polishing wheel specimens, represents the frictional properties obtained with the apparatus and procedures stated herein, and does not necessarily agree or correlate with other slipperiness measuring equipment results.