Scale Factor


Scale Factor : Also called: map scale, map factor: The ratio between the distance separating two points on a map of the earth's surface at a standard latitude or latitudes) and the distance between the corresponding points on the earth's surface itself. For most map projections, this factor is a slowly varying function of latitude, and for synoptic-chart base maps it is usually of the order of 10-6 to 10~7 . The scale factor is sometimes defined as the reciprocal of the above ratio. See conformal map
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