· Fill map with additional true
north-south lines, spaced
approximately 1 inch apart,
parallel to map’s margin. (Fig
19)
5. On the map, mark a start position
with a "point" and a destination
with an "X".
6. Draw a line connecting both
marks.
7. Remove the rubber shoe and
open both covers to 180°.
8. With both covers pointing to the
"X", place clear base next to the
line. (Fig 20)
11
Figure 19
Figure 20
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