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​​​​H. R.  Scientific Works

bimetalic-strip

Bar Breaking Apparatus 

A heavy cast iron stand slotted to carry a stout iron bar, with ten cast iron breaking bars.

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To illustrate expansion of metal on heating and contraction on cooling, with steel bar of length 100 x 10 mm and plated brass gauge with a cutout to just accommodate the bar and two holes through which the bar passes when cold.

bar and gauge apparatus

caloriometer joules

conductivity apparatus star shaped