IS 3212 : 1991 Engineers' drawings instruments, lengthening bars - Specification

1 Scope

This standard covers the requirements of lengthening bars forengineers' drawing instruments.

2 References

IS 1068 :1985Electroplated coatings of nickel plus chromiumand copper plus nickel plus chromium or iron andsteel

IS 2500 : Part 1 :1973 Sampling inspection tables :Part 1 Inspection by attributes and by count ofdefects

IS 3222 : Part 1 :1989 Instruments screws:Part 1 Fasteners for drawing instruments

IS 4170 :1967Brass rods for general engineering purposes

IS 6527 :1972Stainless steel wire rod

IS 6528 :1972Stainless steel wire