Transcription of Map Accuracy Standards - USGS
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Map Accuracy Standards - USGS
Map Accuracy Standards As applied to the USGS positions from aerial photographs. Field Map Accuracy quadrangle topographic map, the hori- survey methods are the only tests An inaccurate map is not a reliable map. zontal Accuracy standard requires that the accepted for official Accuracy testing. X may mark the spot where the trea- positions of 90 percent of all points Positions must be obtained by surveys of sure is buried, but unless the seeker can tested must be accurate within 1/50th of a higher Accuracy . Vertical tests are run locate X in relation to known land- an inch ( centimeters) on the map.
Map Accuracy An inaccurate map is not a reliable map. “X” may mark the spot where the trea-sure is buried, but unless the seeker can locate “X” in relation to known land-
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