application:detection macro-roughness and slidingresistance property of road surface.
1.sand funnel capacity:about 70mm
2.sand funnel bottom opening width2.7mm
3.sanding belt size:50mm
4.moving speed of the sand funnel:about1mm/second
5.moving range of the sand funnel:about 290mm
6.outer dimension:470*160*140mm
7.motor power:12V,3.3A