This special balance is suspended from an upright with a tripod fitted with leveling screws. This assembly rests on a walnut base in the shape of a triangular drawer. The arms are of unequal length. The upright carries a curved graduated scale. The balance beam holds a round pan suspended by three strings at one end, and a rod with two smaller superposed pans at the other end. The base is engraved with the maker's name: "Joannes Savoi Senensis f.[ecit] Florentiae A.[nno] 1766." Provenance: Lorraine collections.