TM 9-243
USING A PLUMB BOB
NOTE
The
practice
procedure
which
follows (for establishing the true
vertical of a post) uses a plumb bob
with a removable head.
The first step is to attach the cord as follows:
1
Insert a string or cord (1) into the cap (2) of the
plumb bob. Make sure the cord will support the
plumb bob. Pull the cord through the cap.
2
Place cap in the palm of your hand and tie an
overhand knot (3) in the cord. Pull the cord drawing the
knot against cap base. Make sure the knot is not too
large or tied at an angle which would affect the hanging
of the plumb bob.
3
Install cap into plumb bob body (4).
4
Tighten cap securely in the body and suspend
the plumb bob by the cord only. Make sure the knot will
support the plumb bob.
11-3
