Leica GPS1200 Series Technical Reference Manual page 1060

Reference Line
Stake to line - vertical
measurements
Stake to arc - horizontal
measurements
P3
P0
GPS12_120
P3
d2
P0
GPS12_121
GPS1200
P1
P2
d2
d1
d1
P2
P0 Start point
P1 End point
P2 Target point
P3 Reference point
d1
d2
P0 Start point
P1 End point
P2 Target point
P3 Reference point
d1 <Height Offset:>, for <Heights: Use Start
Point>
d2 <Height Offset:>, for <Heights: Use Ref
Line>
<Stake Offset:>
<Along Arc:>
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