Steelyard with a fixed weight

    • Provenienza:
    • Data:
      1st century AD
    • Materiali:
    • Dimensioni:
      patera height 7 cm, diameter 13 cm
    • Collocazione:
      Naples, Museo Archeologico Nazionale
    • Inventario:
      inv. 74165
  • Steelyard with a fixed weight

One variation on the steelyard is the balance in which the weight is fixed and set at one end of a graduated beam, and the fulcrum slides along the beam. In the one shown here, perhaps for weighing liquids, the handle of the patera acts as a graduated beam and the hanging hook is free to slide along the slot marked at the side with weight values. The weight is configured as a youthful head of Mercury with winged petasos and was added following arbitrary 19th-century restoration.