Map Accuracy Standards - USGS

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revised several times, and the current version was issued in 1947. (The stan-dards are printed on the reverse of this factsheet.) As applied to the USGS 7.5-minute quadrangle topographic map, the hori-zontal accuracy standard requires that the positions of 90 percent of all points tested must be accurate within 1/50th of

  Revised, Accuracy