The presented instrument is used to measure precious metal alloys based on the Archimedes law. The most popular alloys were silver with copper or silver with gold.
Izrael Abraham Staffel – manufactory
mid–19th century, Warsaw
Jagiellonian University Museum Collegium Maius
Inventory number:16282; 1862/V
https://muzea.malopolska.pl/en/objects-list/2775