Spectra Precision Survey Pro v4.6 Ranger User Manual - Manual (Page 172)

User’s Manual – Conventional Mode
162
RP
Chord
PT
PI
PC
Deflection
Current
Station
PC Deflection
The PC Deflection method computes a chord
length from the PC to the current station and a
deflection angle between the PC-PI line and the
chord.
RP
PT
PI
PC
Current
Station
Deflection
PI to Station
PI Deflection
The PI Deflection method computes the distance
from the PI to the current station and the
deflection angle between the PI-PC line and the PI
to Station line.