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 58
ordi-nary purposes. It has been designedby me for use in marching when themagnetic compass cannot be relied on,and to find the variation of the com-pass and serve as a check on bearingstaken with a prismatic, as well as forquickly finding approximate time whenno other means are available. A… … Fig. 48.—Prismatic Com-pass (Military Pattern). 40 MAPS AND MAP-MAKING in fixing positions in longitude, are not confined to thisuse, and I can only give a few brief notes concerning the
Cartography · Surveying
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