It is Designed for Boyle’s Law demonstration in wide pressure ranges to a group of students with adequate safety features and results can be observed even from a distance. A thick walled, wide bore glass tube with closed end at the top is mounted vertically in front of a scale 3 graduated 0-65cm3, with its lower open end mounted securely on a thick walled metal tube, with the later connected to an oil chamber. The oil chamber has a bourdon gauge calibrated 0-3.4×105 Nm2 at the top and a valve on one side for air pump connection. Zero at the top of the scale facilitates the volume of air enclosed directly from the oil level in tube. The transparent safety added safety to the instrument. Supplied without oil pump.
Glass Tube, supplied as spare for Boyle’s Law Apparatus.