Spectra Precision Survey Pro v4.5 Ranger Reference Manual - Manual (Page 335)

Stakeout Menu
R-327
1. A new backsight circle value is computed, sent to the
instrument and stored in the raw data
2. The Angle Right value is changed to zero to reflect the change.
The instrument now needs to be turned horizontally to zero to
face the design point.
3. To prevent errors, the backsight set up is invalidated when
exiting the Stakeout dialog if this button has been used. A
circle zeroed on a design point is meaningless once the design
point has been staked.
4. The first time Circle Zero is used during a stakeout session, a
dialog will appear to warn that the original backsight
reference will be lost.
Note: The Circle Zero button is not available when using a robotic
total station.
< Back : returns to the previous screen.
Stake > : opens the final Station Staking screen used to perform the
shots to stakeout the point. This is identical to the third Stake Points
screen described on Page R-276.