Pycnometers acc. to Gay Lussac, unadjusted
Pycnometers acc. to Gay Lussac, adjusted 
Pycnometers acc. to Gay Lussac, adjusted, with thermometer and side tube
Pycnometer heads with/without bottle
Water jet pump acc.to Friedrichs-Antlinger
Water jet pump
Water jet pump acc. to Wetzel, without non-return valve
Non-return valve
