bilateral - Post/letter scale - Metal - Functional

Beautiful antique Bilateral precision balance, in black lacquered metal and brass, dating from the first half of the 20th century.
This balance features an exposed mechanism with dual scales and an original metal platform.
The "Bilateral" marking is engraved on the mechanism.
The balance is functional, properly calibrated and returns to zero. The graduations are sharp and easily legible. It displays a lovely original patina with light signs of use consistent with its age.
An ideal collectible item for enthusiasts of antique scientific instruments or industrial decoration.