TM 9-1290-357-15
prevails. Remove any rust and protect surface
214. Operation in High Humidity
with a thin film of oil.
a. The instrument should be wiped dry after
Note. Screws and pins should be lightly oiled to prevent
handling to prevent corrosion or rust.
rusting and freezing in place.
b. Frequently inspect instrument for rust
c. When not in use cover and stow the instru-
ment in its carrying case.
where humidity is high or a salt air atmosphere
2-5
