Maps and map-making; three lectures delivered under the auspices of the Royal geographical society (1910)
Reeves, Edward Ayearst, 1862-1945, Royal Geographical Society (Great Britain) · London, The Royal geographical society · leaf 34
and it was principally for this reason that itwas later on superseded by the Back-staff (Fig. 15). The Back-staff was invented by Captain John Davis, thefamous old Arctic navigator, about 1594. It was given thisname, as the observer, in taking the altitude, turned hisback to the sun. It consisted…
Cartography · Surveying
Internet Archive · Wellesley College Library · Public Domain Mark 1.0. Free to use for anything.
