On 6 July 2026 the Department of Consumer Affairs amended the Legal Metrology (General) Rules, 2011 to revise verification requirements for high‑capacity weighing instruments.
Key changes
- Rule amended and date: Legal Metrology (General) Rules, 2011 amended on 6 July 2026.
- Applicability: Weighing instruments with maximum capacity of 1 tonne and above.
- Previous requirement: Standard weights of at least one tonne or 50% of instrument maximum capacity, whichever was greater.
- Revised requirement: Mandatory standard weights reduced to one‑fifth (20%) of maximum capacity after a successful repeatability test.
Verification method
- Repeatability‑based approach: Verification permitted when instrument demonstrates consistent readings under prescribed repeatability conditions.
- Metrological basis: Change aligns with internationally accepted principles of accuracy, traceability and uncertainty assessment.
Operational implications
- Logistics: Reduced quantity of standard weights lowers transport and handling requirements for weighbridges, warehouses and logistics operators.
- Verification efficiency: Enables faster on‑site verification and reduced operational downtime for high‑capacity users.
IASPOINT Booster Facts
- Legal framework: The Legal Metrology Act, 2009 and associated rules are administered by the Department of Consumer Affairs.
- Reference standards: Standard weights must be traceable to national/international standards maintained by the National Physical Laboratory (NPL), India.
- Repeatability defined: Variation in repeated measurements of the same load under identical conditions; used to justify reduced test masses.