Standards of Weights and Measures (Enforcement) Act, 1985
Chapter IV: Custody and Verification of Standard Equipments
12. Custody and verification of reference standards.-
Every reference standard shall be kept at such place and in such custody as may be prescribed, and no such reference standard shall be deemed to be a reference standard and shall be used as such unless it has been verified, authenticated and maintained in accordance with the rules made under the Standards Act.