Spectra Precision Survey Pro v4.5 Recon and Nomad User Manual - Manual (Page 329)

GPS Module
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• Set the +- angle the same as the previous shot. You can enter
135 here, or use the power button to choose Past Results, and
pick your last horizontal angle.
• Set the horizontal distance to 1000. Tap the power button and
select Apply Scale Factor to scale this distance to the grid.
• Choose to Store Point at PiD201.
• Examine the inverse between PiD201 and 201; they should be
at the same location. Also inverse between 101 and 201; they
should be at the same location.