Section 6 in The Standards of Weights and Measures (National Standards) Rules, 1988
6. Decimal multiples and sub-multiples of units
(1)Decimal multiples and sub-multiples of base, supplementary, derived or other units shall be formed, unless otherwise specified, by using either the full name, or symbol of the SI prefix specified in Schedule III.(2)The SI prefixes shall be used in the manner specified in Schedule III.
