Spectra Precision Survey Pro v4.5 Recon and Nomad Reference Manual - Manual (Page 246)

Survey Pro Reference Manual
R-238
Projection Calculator – Scale
Mapping Plane Scale Factor : displays the computed mapping plane
scale factor on the selected mapping plane at the reference point.
Ellipsoid Scale Factor : displays the computed ellipsoid
scale factor at the reference point.
Combined Scale Factor : displays the Mapping Plane
Scale Factor multiplied by the Ellipsoid Scale Factor.
This is the ground to grid scale factor.
Inverse Combined Factor : displays the inverse of the
Combined Scale Factor . This is the grid to ground scale
factor and is the value used in the localization solution.
< Back : returns you to the previous Projection
Calculator screen.
Accept : copies the two computed values to past results
and returns you to the Main Menu.