For demonstrating expansion of solids by heating and contraction by cooling. Comprising a metal bar mounted on rod with insulated handle, and U-shaped metal gauge also mounted on insulated handle. with GO / NO GO hole.
Consisting of 4 metal strips of copper, brass, aluminium & iron of 100x15mm having small cups at outer ends for holding phosphorous & screwed on a wooden ring 125mm outer diameter meeting in the centre.
Five rods, one of each aluminium, brass, copper, zinc and iron, embedded along one side of a metal tank, size is 150 x 90 x 100mm. Rates of melting compared by placing wax on end of rods thus giving rates of conductivity in the different metals.