22. Operation in Salt Water Areas
Salt is highly corrosive to metals. When operating
the theodolite in salt water areas, wipe the instrument
frequently with a soft, clean cloth. If the theodolite is
exposed to direct salt spray, it should be cleaned
thoroughly and should be returned to an instrument shop
for overhauling as soon as possible. Cleaning intervals
should be shortened considerably for theodolites
subjected to salt air exposure.
Figure 22. Leveling screws adjustment.
Figure 21. Horizontal circle drive, adjustment.
areas and desiccants. After use, dry the instrument
thoroughly with a soft, lint-free cloth.
AGO 5078A 28