Sokkia SET 550, Setup And Operation, Page: 25 / 33

Backsight
Backsight
by Angle cont
by Angle cont
…
…
„
„
Because there is no internal statistical measure
Because there is no internal statistical measure
of how well the
of how well the
backsight
backsight
angle has been set it
angle has been set it
is imperative to check the
is imperative to check the
backsight
backsight
independently:
independently:
„
„
Known point: shoot the target at a position of
Known point: shoot the target at a position of
known X,Y,Z such as a GPS point. The result
known X,Y,Z such as a GPS point. The result
should be within the resolution of the GPS.
should be within the resolution of the GPS.
„
„
Known angle: shoot to a landmark at a known
Known angle: shoot to a landmark at a known
azimuth from the instrument location
azimuth from the instrument location
-
-
the angle
the angle
should be within the resolution of the instrument
should be within the resolution of the instrument