TM 55-6610-247-40
g. Baths will give different hydrostatic pressures at
same depths, according to specific gravity of liquid at
each temperature. Thus, if compass fluid is used,
mechanism should be submerged 8 percent deeper in
warm bath than in cold bath to equalize hydrostatic
pressure. However, need for different immersion depths
may be avoided by connecting two baths with a small
tube. See figure 2-7. Tests are usually made at 40C
(104F) and -40C (-40F).
h. Select two vessels, each large enough to contain
mechanism, and connect them with a 1/8-inch copper
tube (inside diameter) insuring tube.
Change 4 2-10A/(2-10B blank)
