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Standard Weights and Measures The Controllers of Measures (Metronomoi) have also left us many samples of their work. One set of bronze weights (34), inscribed as standard weights of the Athenians, are ... The tile standard was set up outside a late addition to the civic offices in the Agora, where it must often have been the meeting place of irate buyers and makers of roof tiles so that an offending product could be compared with the standard. That the same standard had been in use for centuries is witnessed by the fact that fifth century tiles have the same dimensions. 40. Marble standard for terracotta roof tiles, first century B.C.