Museo Galileo
Virtual Museum
Nobili's metalochromic apparatus
    • Setting:
      Room XVI
    • Inventor:
      Leopoldo Nobili
    • Maker:
    • Date:
      ca. 1830
    • Materials:
      apparatus: wood, brass; metalochromes: steel
    • Dimensions:
      249x162 mm (apparatus), diameter 70 mm (metalochromes)
    • Inventory:
      1234, 1271
    • Nobili's metalochromic apparatus (Inv. 1234, 1271)

Apparatus invented by Leopoldo Nobili. Consists of a black wooden base with a pillar from which project two brass arms, hinged at the middle. To each arm is secured a brass electrode that, by means of a toothed pinion and rack, can be raised or lowered in the vessel containing the lead acetate solution and the disk for metalochromes. Each electrode terminates in a clamp for the platinum point used to produce the metalochromes. Provenance: Lorraine collections.