Spectra Precision Focus 6 5" Total Station User Guide 29
Setting up the Instrument 2
Setting up the tripod
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CAUTION – The tips of the tripod ferrules are very sharp. When handling or carrying the
tripod, take care to avoid injuring yourself on the ferrules.
Note – Do not carry the instrument while it is attached to a tripod.
1. Open the tripod legs far enough for the instrument to be stable.
2. Locate the tripod directly over the station point. To check the position of the
tripod, look through the center hole in the tripod head.
3. Firmly press the tripod ferrules into the ground.
4. Level the top surface of the tripod head.
5. Securely fasten the thumb screws on the tripod legs.
6. Place the instrument on the tripod head.
7. Insert the tripod mounting screw into the center hole of the base plate of the
instrument.
8. Tighten the tripod mounting screw.
Centering the instrument
When you center the instrument, you align its central axis precisely over the station
point. To center the instrument, you can use the optical plummet, the laser plummet,
or a plumb bob. The plumb bob is sold separately.
Centering with the optical plummet
Note – For high accuracy, check and adjust the optical plummet before you center the
instrument.
1. Set up the instrument on the tripod. See above.
2. Look through the optical plummet and align the reticle
with the station point. To do this, turn the leveling
screws until the center mark of the reticle is directly
over the image of the station point.
3. While supporting the tripod head with one hand, loosen
the tripod leg clamps and adjust the lengths of the legs
until the air bubble is in the center of the circular level.
4. Tighten the tripod leg clamps.
5. Use the electronic level to level the instrument. See also Leveling the
instrument, page 31.
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