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 59
Fig. 49.—Reeves Astronomical Compass (Front). … Fig. 50.—Reeves Astronomical Compass (Back). method of determining time. The earliest method of allseems to have been by the length of the shadow of the sun INSTRUMENTS 41 cast by an upright stick or rod, which, of course, varies withthe day, being naturally shortest at midday when the sunis on the…
Cartography · Surveying
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