Convergence calculator – Spectra Precision Survey Pro v4.6 Ranger User Manual User Manual
Page 301
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GPS Module
291
Convergence Calculator
1. Go to the Survey > Projection Calculator screen.
2. Choose a point on the mapping plane for convergence
computation in the Select Point control. Tap Solve Rotation>.
3. The convergence and rotation are calculated. The convergence is
displayed in the Geodetic N to Grid N box. The rotation is
displayed in the Grid N to Geodetic N box.
4. Tap Accept when you are done. Both numbers are saved in the
Past Results
list so you can use them in other calculations.
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