IS 4590-1980
Secondary School Level Norms

Standard No.

IS 4590-1980

Release Date

1981

Published By

IN-BIS

Latest

IS 4590-1980

Scope

This standard specifies the requirements of tilting type secondary level capable of attaining standard deviation ( mean square error ) of ± 2 mm in 1 km of double levelling.

IS 4590-1980 history

• 1981 IS 4590-1980 Secondary School Level Norms