IS 3221 : 1966 Sets for Drawing Instruments
UDC 744.34 | PGD 22 |
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Reaffirmed 2021 |
1 Scope
1.1 This standard specifies the types, sizes and number ofdrawing instruments which comprise a set of drawing instruments ofThis types:
a) Drawing Instrument set - General,
b) Drawing Instrument Set - Engineers', and
c) Drawing Instrument Set - Utility.