The original broken pulley bracket mounts have been replaced with metal brackets. Only 1 available.

Ideal tool from demonstrating friction, acceleration, work, potential energy & vector components of force.
Smooth wooden plane 600 x 80mm, hinged to the base at one end.
Provided with a pulley for force and with scale pan and weight. Supplied with 3 friction boards, plastic cart and angled meter.
Dimensions: 645 x 125 x 400 mm (weight 2kg).

Some assembly required (requires Philips Head screwdriver - not supplied). Assembly instructions included.