Description :
For demonstrating the Boyle’s law. The apparatus consists of a wide bore strong glass tube mounted in vertical position in front of scale graduated 0-65 cm3. A bourdon gauge is provided for measurement of pressure. The gauge is fitted with a pressure chamber which contains coloured oil (supplied in separate container). With the increase of pressure in the oil chamber, oil moves into the glass tube. Volume and actual pressure of the contained air can be read directly. The tube is covered with a rigid safety screen. The tube, bourdon gauge and safety screen are fixed on a base.