IS 3209 : 1989 Engineers Drawing Instruments - Spring Bow Compasses - Specification

1 Scope

1.1 This standard covers the requirements of spring bowcompasses fm engineers drawing instruments of This types:

a) Spring bow Pen,

b) Spring bow pencil,

c) Spring bow divider, and

d) Spring bow reversible pen-pencil.

2 Reference

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

IS 3216 :1989Engineers drawing instruments, needles

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

IS 4827 :1983 Electroplated coating of nickel and chromium oncopper alloys