How can i calculate the area in a toposheet
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1. Lay a piece of paper down on the map and mark it.
2. Hold your measurement up to the bar scale.
3. Interpret the largest portion of distance from the primary scale.
4. Read the extension scale for the smaller numbers.
2. Hold your measurement up to the bar scale.
3. Interpret the largest portion of distance from the primary scale.
4. Read the extension scale for the smaller numbers.
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