The Legal Metrology Act, 2009
55. Act not to apply in certain cases. –
The provisions of this Act, in so far as they relate to verification and stamping of weights and measures, shall not apply to any weight or measure,-
a. used in any factory exclusively engaged in the manufacture of any arms, ammunition or both, for the use of the Armed Forces of the Union;
b. used for scientific investigation or for research;
c. manufactured exclusively for export.