Block for friction and stability

Varnished wooden block with hook, at one end a hook for attaching a dynamometer when doing experiments on static, sliding or rolling friction, a centre hole for a bearing pin for attaching plumb line DM600-1L when doing experiments on stability, two 4 mm holes for attaching either rubber or sliding pad with plug DM680-ff
Dimensions: 160x80x40 mm, weight: approx. 350 g