Bar Breaking Apparatus:

The tool displays thermal expansion and contraction, as well as the forces involved. It is made of a heavy cast metal frame with a U-shaped slotted end pillar that supports a sturdy iron bar.

To show the forces that can be exerted during thermal expansion or contraction.
■Comprising of a heavy frame 250 x 75 x 80mm with slotted and pillars to carry a stout iron bar.
■The bar is threaded at one end for a large tensioning nut and has holes at the other end to accommodate the cast iron breaking bars.