PACKING UP

TM 5-6675-329-13 & P

2-8

PACKING UP

The Carrying Case NA2-80 is opened. Remove the objective assembly sunshade (4, Figure 1-1) from the

telescope object housing (4, Figure 1-2) and store it in the Carrying Case NA2-80. With one hand on the Automatic

Level NA2, the other hand is used to loosen the tripod central fixing screw (2, Figure 1-3). Holding on to the base plate

(1), the instrument is placed upside down in its recess in the lower shell transport case (1, Figure 1-4) of the Carrying

Case NA2-80. The upper shell is placed over it, both shells are pressed together, the locking hook is engaged and the

clasp (3) at the end of the carrying strap is snapped closed.

If the instrument has become wet during use it should be wiped carefully and the Carrying Case NA2-80

should be opened as soon as possible (normally back at the base) so that the instrument can dry out completely. Never

leave a wet instrument in a closed Carrying Case NA2-80.

Section IV: OPERATION UNDER UNUSUAL CONDITIONS

2-9

GENERAL

Surveying Level NA2-80 is designed to operate normally within a wide range of climatic conditions. However,

some conditions as indicated in paragraph 2-7, require certain precautions to avoid potential damage to the equipment.

2-10 OPERATION IN UNUSUAL WEATHER

When the instrument must be used in an atmosphere where the ambient temperature is more than 10

different than that at which it was stored, allow at least two minutes for each difference to permit temperature

stabilization and for evaporization of condensation.

In order to prevent penetration of dust into the interior of the instrument, it is not recommended that the

instrument be used during severe windstorms.

Rain will wet the exterior of the instrument and will facilitate penetration of moisture. The cover (5, Figure 1-

1) is designed to protect the Automatic Level NA2 from dust and rain and mud. (To protect Surveying Level NA2 (and

the operator) from rain, and shade it from the sun during extremely hot conditions, a large umbrella should be available

An instrument which has become wet or muddy during use must be wiped carefully and must be removed

from its Carrying Case NA2-80 as soon as possible after returning to base, and allowed to dry out completely. It must not

be temporarily stored with the Carrying Case NA2-80 closed before it has dried out completely.

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