Maps and survey . s in use in different countries. We will examine threetypical cases: the British Ordnance Survey; the French 1/50,000map published by the Service Geographique de IArmee; and the1/1,000,000 International Map. Ordnance Survey. 1/63,360, or one inch to the mile. (SeePlates I and IV.) A distinction is made between fenced and unfenced roads,the former being shown by double continuous lines, the latterby dotted lines. The distinction is of military importance,since fenced roads afford cover and obstruct the free passage oftroops across country. Three grades of metalled roads aredis
Maps and survey . s in use in different countries. We will examine threetypical cases: the British Ordnance Survey; the French 1/50,000map published by the Service Geographique de IArmee; and the1/1,000,000 International Map. Ordnance Survey. 1/63,360, or one inch to the mile. (SeePlates I and IV.) A distinction is made between fenced and unfenced roads,the former being shown by double continuous lines, the latterby dotted lines. The distinction is of military importance,since fenced roads afford cover and obstruct the free passage oftroops across country. Three grades of metalled roads aredistinguished by differences in breadth, and the first two gradesare coloured orange. Unmetalled roads or cart tracks are shownby still narrower double lines, and footpaths are long-dotted,but are with difficulty distinguished from parish boundaries,which are not needed on a topographical map. (See Plate I.) It is often found that the distinction made on the map CONVENTIONAL SIGNS PLATE I One Inch Ordnance Survey Map. Double and Single Railwaysmapssurvey00hink
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectsurveying, bookye, map
