Spectra Precision Survey Pro CE v3.60 GPS User Manual - Manual (Page 160)

Survey Menu – RTK
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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.
%DFN : returns you to the previous Projection Calculator screen.
$FFHSW : copies the two computed values to past results and returns
you to the Main Menu.