Spectra Precision Survey Pro v3.80 Recon iPAQ Reference Manual - Manual (Page 173)

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Cogo Menu
The Cogo Menu contains all of the coordinate geometry routines used
to perform computations from the existing job data. The following
screens are available from the Cogo Menu:
A: Point in Direction
B: Intersection
C: Offset Line
D: Offset Points
E: Corner Angle
F: Compute Area
G: Triangle Solutions
H: Map Check
I: Predetermined Area
J: HD/VD to SD/ZA
K: SD/ZA to HD/VD