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3 PREPARATION FOR SURVEYING
3 PREPARATION FOR SURVEYING
3-1 Centering and Leveling of the Instrument
Setting up the instrument and the tripod
q Adjust the tripod legs so that a height suitable for observation is obtained
when the instrument is set on the tripod.
w Hang the plumb bob on the hook of the tripod, and
coarse center over the station on the ground. At this
time, set the tripod and fix the metal shoes firmly
into the ground so that the tripod head is as level as
possible, and the plumb bob coincides with the
station on the ground.
e If the tripod head is mis-leveled by the action of
fixing the metal shoes into the ground, correct the
level by extending or retracting each leg of the
tripod.
3-2 Laser plummet
Laser plummet model
The laser plummet is not set to be ON at factory shipping. The laser plummet
operation of power supply ON can be set by command No 520, LD PLUM & E
VIAL. For using Command number, refer to 9-2. Accessing by 007.
[For the Detaching type laser plummet equipment model]
Turn on the laser plummet function by pushing the Laser key.
Match the position with the leveling screw so that the laser mark coincides with
the ground mark.
Instrument
Base plate
Tripod head
Center screw
Metal shoe
Contract
PENTAX R-300 (p20-52) 10/30/02 11:08 AM Page 20