Not Artefact, but Standard: Harappan Weight Metrology as Tiered Administrative Infrastructure

The Harappan weight system is not an archaeological curiosity. It is a tiered metrological architecture — binary-octal scaling for precision commodities, decimal scaling for bulk goods — that solved distinct administrative problems with distinct mathematical tools, deployed across a civilisation spanning over a million square kilometres, standardised to a base unit of 0.89 grams (Masha = 8 Ratti), and held stable across 500 or more excavated specimens with a mean deviation below 4%. That base unit was still in use in Mauryan coinage (Satamana: 100 Ratti; Karshapana: 32 Ratti), is recoverable from a cuneiform tablet recording Dilmun-Ur trade conversion rates (UET V, 796; Bibby 1970), and is still used by jewellers in Bharat today.

The Griffith-Müller tradition, which reads Harappan material culture as the remnant of a lost civilisation with no functional descendants, cannot account for this. A weight standard that persists for 5000 years in continuous operational use is not a relic. It is infrastructure. The colonial framing that called it archaeology, and the postcolonial state that legislated it out of official existence with the Standards of Weights and Measures Act (1956), are two moments in the same epistemological operation: the refusal to recognise functional knowledge as knowledge when it appears in South Asian sources.