The sand patch test is performed by spreading a measured volume of fine sand (ASTM) or glass spheres (EN) into a circular patch on the road surface and filling the surface depressions to the level of the peaks.

The equipment comprises:
-Spreader disc with handle and rubber coated surface
-Wind shield
-Screw-adjusted compass 500 mm graduated rule.
-Three graduated cylinders 10, 25 and 50 ml cap
-Soft brush
-Two glass pyknometers with metallic screw top and hole
-Metallic cylinder for spheres volumen measurement
-Knee-guard
-Carrying case