19
Preliminaries
5. Setting Up the Instrument
1 Set up the tripod.
Spread the tripod legs about the same distance apart so that the
tripod head is approximately level. Tread the tripod shoes firmly into
the ground.
2 Mount the instrument on the tripod.
Hold the instrument on the tripod head and tighten the centering
screw.
3 Level the instrument.
Spherical head tripod: Loosen the centering screw and slide the
instrument across the tripod head until the
bubble is centered in the circular level.
Tighten the centering screw.
Flat head tripod: Extend or push in the tripod legs until the
bubble is centered in the circular level.
When the bubble is more or less centered,
turn the leveling foot screws until the
bubble is exactly centered in the circle.
When you turn a screw clockwise, raising
the instrument, the bubble will move toward
the position of that screw.
DL502-503.book 19 ページ ２０１０年４月５日 月曜日 午前９時４７分
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