Cased Instruments, Continued
Compasses
To use a compass, follow this table:
(Continued)
Step
Action
1
Make sure the needlepoint projects 1/64 inch beyond the nib.
2
Set compass legs to radius of desired circle or arc (Figure C).
3
Place needle carefully in exact center of proposed circle (Figure D).
4
Slowly lower nib to paper.
5
Rotate compass to complete circle (Figure E).
6
Check diameter of circle for accuracy (Figure F).
Figure 2-25 illustrates the steps for drawing a circle.
Figure 2-25. —A. Determine diameter of circle. B. Draw center
lines. C, D, E, and F follow chart.
Continued on next page
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