Leica GPS1200+, Technical Reference Manual, Page: 1022 / 1442

Reference Line 1022
Defining a reference
line/arc A reference line can be defined in the following ways:
• Two known points
• One known point, an azimuth, a distance and a gradient
• One known point, an azimuth, a distance and a difference in height
• Polylines can be imported from a DXF job and selected from a list or on the
Map page.
Refer to "42.8.1 Overview".
A reference arc can be defined in the following ways:
Target point: The design point.
• For measuring to a reference line, this is the point with the coordi-
nates of the current position and the designed or calculated height.
• For staking or grid staking to a reference line, this is the point to be
staked.
Measured point: The current position.
P0 Start point
P1 End point
d1 Known distance
d2 Difference in height,
Δ Ht
α Azimuth
β Elevation angle between the start point and
the end point
GPS12_112
d1
d2
P0
P1