IS 5737 : 1970 Specification for Engineers Drawing Instruments, Curve Pens
UDC 744.345 | PGD 22 |
|
Reaffirmed 2019 |
1 Scope
1.1 This standard prescribes the requirements for curve penshaving a handle and a curved drawing nib.
2 References
IS 2 :1960Rules for rounding off numerical values
IS 1068 :1968Specification for electroplated coating ofnickel and chromium on iron and steel
IS 3222 : Part I :1966 Specification for instrument screws:Part I Fasteners for drawing instruments