Apparatus for determining experimentally the relationship between gas volume and pressure at constant temperature (Boyle’Ÿs law). The working cylinder is made of transparent acrylic and has a moving piston, scale and manometer. Along with a valve to let in gas or release it.
The movement of the piston is achieved with the help of a threaded connecting rod turned by means of a manual crank. In this way, pressure both above and below atmospheric can be generated. For safety reasons, the working cylinder is enclosed in another protective transparent acrylic cylinder.