Spectra Precision Survey Pro v4.5 Ranger Reference Manual - Manual (Page 219)

Survey Menu – GPS Module
R-211
Fix scale to 1.0
: check the Solve Rotation Only control to constrain the
least squares solution to a scale of 1.0. Do this when you want to
orient your GPS to an existing grid but you want to hold the scale of
the GPS measurements.
Note: You must choose exactly two horizontal control points for a
fixed scale localization.
Solve H
: check Solve H to use the selected control points in a least
squares solution or to use the horizontal values from the manual
entry card.
Solve V
: check Solve V to use the selected control points in a least
squares solution or to use the horizontal values from the manual
entry card.
Manual Entry> : opens the screens used to manually enter a set of
localization parameters for a horizontal and/or vertical solution.
Calculator> : opens the manual entry screens in Localization
Calculator mode. This interface, only available when using Ground –
TDS Localization
horizontal mode, is used as one technique to do one-
point setups on new jobs.
Solve > : computes the localization parameters using the least
squares solution with the selected control points, then opens the
Residuals screen.