Spectra Precision Survey Pro v4.5 Ranger Reference Manual - Manual (Page 201)

Survey Menu – GPS Module
R-193
Offset Shots
Survey Data Collection Offset .
The Offset Shots screen is used to collect a point you cannot
physically occupy with GPS. You can occupy a nearby point with the
GPS rover and then measure the offset distance and direction with
tape and compass, or take a shoot with a laser range finder.
Offset Point
: is the point name of the offset
point to be stored.
Description
: is the description of the offset
point to be stored.
Azimuth / Bearing : is the direction or
bearing from the occupied point to the offset
point.
Direction from Two Points : is used to compute
the azimuth or bearing from the reference
point to the offset point by occupying a second
reference point on line with the offset point. Once tapped, a prompt
opens for the name to store the reference point followed by the
Occupy Data Points screen (Page R-194). After measuring the
coordinate at the on line point, you will return to the Offset Shots
screen where you will be prompted to pick the direction to the offset
point.
Zenith / Vertical Dist : is where you enter the zenith angle or
vertical distance from the occupied point to the offset point.
Slope Dist
/ Horizontal Dist: is where you enter the slope distance or
horizontal distance from the occupied point to the offset point.
Occupy GPS : is used to occupy the GPS reference point. A prompt
for the name of the GPS reference point is followed by the Occupy
Data Points screen (Page R-194). After measuring the coordinate at
the occupied point, you will return to the Offset Shots screen where
new points can be stored with a direction and distance from the
occupied point.
Shoot Laser : triggers the selected active conventional instrument to
take a shot to the offset. You can select from a number of laser