Mensa Ponderaria

Near the temple of Apollo in the Forum this consists of two stacked limestone benches, each with cavities corresponding to the different measurements, and with a hole at the bottom through which to pass the product to be measured.
Beginning in the late 2nd century BC, this was set up by the public office to control weights and measures, gauged according to the local Oscan system, but later standardized to the Augustan system as noted in the inscription engraved on the front (approximately 20 BC).

A. CLODIVS A. F. FLACCVS NARCAEVS N. F. A. ARELLIAN. CALIDVS
D. V. I. D. MENSVRAS EXAEQVANDAS EX DEC. DECR.

Aulus Clodius Flaccus, son of Aulus, Narcaeus Arellianus Calidus son of Narcaeus, duumvirs responsible for dispensing justice, took care of gauge measures after a decree by the Decurions.