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 27
Fig. 6.—Astrolabe (front). Fig. 7.—Astrolabe (back). of concentric rings marked with various divisions. Theserings were generally circles of degrees ; circles of the signsof the Zodiac ; circles of the days of the year and theirnumbers; circles of the months with their days, andnumbers of the days;…
Cartography · Surveying
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