IS 4380 : 1967 Specification for Abney Level

1 Scope

1.1 This standard covers the functional and general requirementsof Abney levels.

2 References

IS 2 :1960 Rules for rounding offnumerical values.

IS 988 : 1959General requirements for optical components

IS 1632 : 1960Specification for bubbles

IS 1779 : 1961Specification for 4-metre, levelling staff, folding type