NA2/NAK2-2.0.0en
Measurement preparation
12
Levelling up
1. Place level onto tripod head.
Tighten central fixing screw of
tripod.
2. Turn footscrews of tribrach
into centre position.
3. Centre circular level by
turning the foot screws.
Centring the circular level
1. Turn foot screws A and B
simultaneously in opposite
directions until bubble is in
the centre (on the imaginary
"T").
2. Turn foot screw C until bubble
is centred.
NA-12
NA-13
NA-14
B
A
C
Содержание NA2
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