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Expansion Apparatus

Expansion Apparatus


  • Containing two cast metal uprights connected by two parallel support rods made of plated metal, each of which supports an extension bar at the top. One upright has a permanent expansion bar, and the other upright has a friction pointer underneath it. The pointer glides up and down a scale from 0 to 90 degrees. The pointer moves along the scale as the bar expands when heated. Complete with three expansion bars one each of brass, iron, and aluminium.


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