The apparatus is used to measure antiskid performance of high grade roads ad airport pavement both in the lab ad in-situ. The apparatus consists of a spring loaded rubber slider mounted on a pendulum arm. The arm can be adjusted vertically from a rigid support column. The base has three adjustable feet so that the swing of the pendulum during the test moves through a truly circular path while operated directly on a road surface.
Ref. Standard: BS 812-114