Leica TPS1200 series Technical Reference Manual page 986

Reference Line
Target point outside arc
d4
P1
P0
TPS12_182
TPS1200
d3
d2
P2
d5
P4
P3
d1
P0 Instrument station
P1 Start point
P2 End point
P3 Measured point
P4 Reference point
∆
d1 < Offset:>
∆
d2 < Arc:>
∆
d3 < Arc-End:>
d4 <Check Dist 1:>
d5 <Check Dist 2:>
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