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1.3.5 Scale Distortion Referring back to figure 18, it is clear from the example that a projection will distort the distance between two points. Clearly the true (Earth surface measured) distance between Anchorage and Washington DC has not changed, but the l nghon h m pc nch ng d p ndngon h poj c on. Mos poj c onsw us h subun y‘c n lsc l f c o ’. n the example above the Mississippi West state plane projection has a central scale factor of 0.99975. This means that on the central meridian a 1,000-meter line measured on the ground will be represented by a line 999.75 meters at the scale of the map. If the map has a scale of 1:10,000, then the line on the map will be represented by a line 9.9975 cms long. If you plotted the same line on the central meridian of a UTM projection with a central scale factor of 0.9996, then the line on the map would be represented by a line 9.996 cms long.
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