Designed for experiment-based determinations of the dependence between the volume and pressure of a gas at constant temperature, this apparatus is ideal for advanced studies of Boyle’s law. The device consists of a plexiglass cylinder with graduations for volume measurement, piston, manometer and air inlet/outlet valves. Turning the handle moves the piston via a thread in the plexiglass cylinder — this allows a generation of overpressures and underpressures. To ensure student safety, the power cylinder is enclosed in a double plexiglass cylinder. Size: 30cm L x 40cm dia.; weight: 6 lbs.