Boyles Law apparatus
Comprising two glass tubes, one closed the top and other tube open. Their lower ends are drawn out an connected together by 1 meter of tubing. Both tubes are mounted on sliding brackets which may be locked in any position them on the metal supporting rods. Seasoned wood board approximately 44" high carries a meter scale graduated from 0 to 100 cm fitted heavy iron base levelling screws. Supplied without mercury and rubber tube.
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