TM 5-6675-312-14
NOTE
If the carrying case is accidentally dropped, the equipment should be thoroughly inspected for
damage.
(d) If the equipment is to be carried long distances by manpower, the rucksack (fig. 2-15) should be
utilized.
b. Reinstallation After Movement. Refer to paragraph 2-6 for assembly and preparation for use.
Section IV. OPERATION UNDER UNUSUAL CONDITIONS
2-10. GENERAL This section contains the instructions to obtain optimum performance of the equipment under unusual
operating conditions.
2-11. OPERATION UNDER UNUSUAL CONDITIONS
a. Operation in Extreme Cold (Below 0 .) (-18 .) With proper precautions and servicing, the equipment can be
F
C
used in extreme cold. Its use is limited only by the endurance of operating personnel and conditions affecting visibility.
The equipment should be kept out-of-doors or in unheated buildings for short periods of nonuse. Extreme temperature
changes will induce internal stresses affecting accuracy and lenses, and prisms may become fogged.
CAUTION
Avoid subjecting the equipment to sudden changes in temperature.
b. Operation in Extreme Heat. Operation of the equipment in extreme heat and under the direct rays of the sun
can cause internal stresses and distortion in the equipment and produce poor sightings because of heat waves. If
possible, the
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