An electrometer is an electrical instrument for measuring electric charge or electrical potential difference.
Time and place of creation: ca. 1915, Germany
Creator: E. Leybold’s Nachfolger – manufactory
Inventory number: 16994; 2118/V
Museum: Jagiellonian University Museum Collegium Maius
https://muzea.malopolska.pl/en/objects-list/2770
Digitalisation: Digitalisation: RDW MIC, Virtual Małopolska project