Application: Detection macro-roughness and sliding resistance property of road surface. 1. sand funnel capacity: approximate 70 ml 2. sand funnel bottom opening width 2.7 mm 3. Sanding belt size: 50 mm 4. Moving speed of the sand funnel: approximate 1 mm/second 5. Moving range of the sand funnel: approximate 290 mm 6. Outer dimension: 470×160×140 mm 7. Motor Power: 12V, 3.3A
