Boyles Law Apparatus -

Wide bore glass tube mounted vertically in front of a scale graduated 0 to 60cm

Zero corresponds to the inside of the closed (top) end of the tube

Air is confined in the tube by a coloured oil contained in a metal pressure chamber

Pressure chamber is fitted with a Bourdon type gauge calibrated 0 to 3.5kg cm2 (0 to 50 lb/in2) actual pressure

A valve is fitted to the air inlet tube from the pump

As the pressure in the oil chamber is increased, oil level and its actual (total) pressure are directly indicated

Tube is made of extra strong glass and is securely covered with transparent plastic on the front

Overall height of apparatus approx. 690mm