Graduated Glass Vessel With Stopcock And Ground-Joint Tube – Two-Piece Set

Two-piece laboratory glass set: a measuring vessel with white graduations, a glass stopper and stopcock, plus a bulbous tube with connections at both ends, a removable ground joint and retaining hooks. Signs of use and yellowish discolouration. Detail props for laboratory sets. Their precise original application has not been identified; operation and leak-tightness have not been tested.