Raymarine Compass Instrument ST40 - Manual (Page 31)

22 ST40 Compass Instrument Owner’s Handbook
D4646-1
To bracket mount your ST40 instrument, do so in accordance with the
Instruction Sheet, which is included with the Desktop Mounting
Bracket.
3.3 Calibration requirement
Once installation is complete and before you use your instrument, carry
out the calibration procedures detailed in Chapter 4, Calibration.
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