Description

A glass tube mounted in front of vertical scale graduated from 0-60 cm. The top end of tube is closed enabling zero correspondence of air in glass tube. Consists of bourdon gauge and components are mounted on wooden base. The glass tube and bourdon gauge are connected by means of rubber tube. Coloured Oil is gradually pumped from reservoir into a tube containing air. Whilst the volume of air is read from a scale clearly visible behind the tube, pressure is measured by bourdon gauge. Supplied with oil and hand pump.