Spectra Precision Survey Pro v4.9 - Manual (Page 129)

error.
Apply: Applies the adjustment to the listed points.
Note: When the Adjust with Projection wizard was opened from the menu, tapping Apply will only update the selected
job file point locations. The job file coordinate system will not be changed in this case. When the Adjust with
Projection wizard was opened automatically as a result of a change of coordinate system, tapping Apply will update
all eligible job file point locations, and it will update the job file coordinate system.
Adjust with Projection – Adjust More
The Adjust with Projection Adjust More screen is used to return to the Select Points screen if you wish to adjust some
selected points again. This screen only shows when the wizard was opened from the menu.
Projection Calculator
[Survey] [Projection Calc]
The Projection Calculator wizard is used to calculate scale factor or convergence (rotation) for any point on the
selected mapping plane. You can use the computed values for calculations from the, Past Results power button option.
Projection: Displays the current mapping plane settings.
Select Point: Enter the name of the reference point where the rotation or scale is to be computed.
[Calc Rotation >]: Opens the Projection Calculator screen where the rotation is computed.
[Calc Scale >]: Opens the Projection Calculator screen where the scale is computed.
Projection Calculator – Rotation
Convergence: Displays the computed rotation from geodetic north to grid north.
Rotation: Displays the computed rotation from grid north to geodetic north.
[< Back]: Returns you to the first Projection Calculator screen.
[Accept]: Copies the two computed values to past results and returns you to the first Projection Calculator screen.
Projection Calculator – Scale – Height Correction
Ellipsoid Height: Enter the WGS84 ellipsoid height for your current location. This value will be used to calculate the
height above the terrain component of the scale factor. This is sometimes referred to as the sea level correction.
[< Back]: Returns you to the first Projection Calculator screen.
[Solve >]: Takes you to the final screen.
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