TM 9-243
USING A PLUMB BOB - Continued
NOTE
The following task is not the only
use of a plumb bob.
NOTE
Post hole must be dug and an
assistant is required before starting
the task.
5
Place a ruler (5) on the top of the post (6) so
that it extends 2 inches beyond an edge.
6
Hang string and plumb bob so they extend over
end of ruler and the plumb bob is just above the ground
surface.
11-4
