Spectra Precision Survey Pro v4.6 Recon-Nomad Reference Manual - Manual (Page 149)

Survey Menu
R-141
Horizontal Angle Offset
Survey Horizontal Angle Offset .
The Horizontal Angle Offset screen allows you to compute and store
the location of a new point that cannot be occupied, such as at the
center of large tree.
The routine shoots a prism positioned at the side of the
new point and then reads the horizontal angle when
aiming toward the center of the new point to compute the
new point’s location.
Foresight: is the point name that will be used when
storing the new point.
Description: is the description for the offset shot that is
stored.
Backsight… : accesses the Backsight Setup screen (Page
R-124).
Aim Center : will record the horizontal angle from the
total station, which should be facing the center of the
new point.
Shoot Prism : will take a shot to the prism, which is located at the
side of the new point.
: is a shortcut to the Surveying Settings screen (Page R-44).
Note: The new point will have the same elevation as the point
occupied by the prism.
Note: The prism only needs to occupy the location at the side of the
new point. A prism is not necessary when shooting the location
directly in front of the new point.