IS 3218 : 1968 Specification for Parallel Rulers, 150 mm (Link Type)

1 Scope

1.1 This standard covers the requirements of link type parallelrulers of 150 mm length commonly used by topographers anddraftsmen.

2 References

IS 2 : 1960Rules for rounding off numerical values

IS 287 : 1960Recommendation for maximum permissible moisture content oftimber used for different purposes in different climaticzones