Standardized weights and measures play an important role in the economies of complex societies. Traditionally, archaeometrologists have employed individual weights as their basic units of analysis and, as a result, they have been able to address a limited range of questions concerning the economic role of weights. I propose a shift in emphasis from individual weights to sets of weights as the primary units of analysis. Using cases from the Aegean Bronze Age, I present a method for reconstructing sets of weights, offer criteria for their analysis and discuss the implications of this new perspective.