azimuth-compass

As soon as you have an opportunity, compare them with a standard barometer, compare also your ordinary thermometer and azimuth-compass with standard instruments, and finally, have them carefully re-verified at the Kew observatory on your return to England.

The Art of Travel Shifts and Contrivances Available in Wild Countries Francis Galton 1866

I had no azimuth-compass and consequently could not observe very accurately the variation; but I believe there is so little in Mangaryn

A Voyage to the South Sea For The Purpose Of Conveying The Bread-Fruit Tree To The West Indies, Including An Account Of The Mutiny On Board The Ship William Bligh 1785

The declination of the needle was observed by the azimuth-compass to be 22° 30 '32 "N.E., and its inclination from the elevation of the pole, 11° 11'.

A General History and Collection of Voyages and Travels — Volume 13 Robert Kerr 1784