Burdett 1:100 000 topographic map
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At this scale 1cm on the map represents 1km on the ground. Each map covers a minimum area of 0.5 degrees longitude by 0.5 degrees latitude or about 54 kilometres by 54...
在此比例尺下,地图上1厘米对应实地1千米。每张地图的最小覆盖范围为经度0.5度×纬度0.5度,约合54千米×54……



