IS 6421-1972
Perforator specification paper double hole

Standard No.

IS 6421-1972

Release Date

1972

Published By

IN-BIS

Latest

IS 6421-1972

Scope

Specifies requirements of double hole paper perforators.

IS 6421-1972 history

• 1972 IS 6421-1972 Perforator specification paper double hole