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5) Hold the instrument on the tripod head and tighten the
centering screw. (Fig.5.3)
Fig.5.3
6) When using the spherical head tripod,
slightly loosen the centering screw, hold
the base plate
in both hands, and slide
it across the tripod head until the bubble is
in the proximity of the circular level
.
(Fig.5.4)
Fig.5.4
7) Tighten the centering screw.
8) Adjust the leveling foot screws
until the
bubble is exactly centered in the center
circle. (Fig.5.5)
Fig.5.5
7
5
6
Содержание B20
Страница 1: ...SURVEYING INSTRUMENTS B20 B21 自動レベル Automatic Level 取扱説明書 OPERATOR S MANUAL ...
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