Pair Of Ground-Joint Laboratory Glass Adapters With Twin Side Tubes And Stopcocks

Pair of similarly constructed laboratory glass adapters, each with a large tapered ground-glass joint, a central glass chamber, two parallel side tubes and a ground-glass stopcock. Bent tube arms of different lengths, red and blue markings, and some remaining black protective caps. One stopcock is secured with rubber bands. Signs of use and storage, with locally cloudy glass surfaces and yellowish ground joints. Distinctive detail props for laboratory and chemical industry sets. Their precise original function has not been identified; operation and leak-tightness have not been tested.