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What datum?

J

JHM

Member
What datum needs to be entered when calibrating older (pre 1900) scanned maps in fugawi? The maps don't specify a datum.
 
Almost impossible to tell.
You may be the best off not using the existing map grid but finding some points on that old maps and the same points on a newer map and using the co-ordinates and datum from the newer map for the points on the old map.
I hope I'm making my thoughts clear. If not, let me know.
 
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