Spectra Precision Survey Pro v4.6 Ranger User Manual - Manual (Page 142)

User’s Manual – Conventional Mode
132
Shoot From Two Ends
The Shoot From Two Ends screen is used to provide more accurate
vertical closure to a traverse. The routine requires that after the
foresight is shot, its location is not computed until after the
foresight point is occupied and a second shot is taken to the
previous occupy point. Once the second shot is complete, the
coordinates for the original foresight are computed from an
average of both shots.
1. From the Main Menu, select . Survey , Shoot From 2 Ends . If
you have not already setup your backsight, you will need to do
so before the Shoot From Two Ends screen will open.
2. Fill in the screen, including the number of sets that you want to
shoot from each point in the Number of Sets field.
3. Tap Traverse , aim toward the backsight and tap Take Shot .
4. Shoot the specified number of sets to the
backsight and foresight. When finished,
the Move To Other End dialog box will
open, shown here. At this point you need
to move the total station over the current
foresight point, place a prism over the
current occupy point, fill in the dialog and
tap . A new screen will open.
5. Aim at the prism located over the previous
occupy point and tap Take Shot . You will
then need to shoot the specified number of
sets to the previous occupy point.
When the final set is complete, a screen will inform you of your new
occupy and backsight point and the new point will be computed and
stored.
Shot 2 Shot 1
BS