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re: How do surveyors determine elevation of land?
Posted on 8/13/16 at 6:53 am to upgrade
Posted on 8/13/16 at 6:53 am to upgrade
I beg back in the day they used sextants to determine elevation. Figure out which line of longitude you're on using the sun and the stars then determine elevation by measuring an angle between the horizon and the North star and compare that to what it would be if the earth were perfectly round with no changes in elevation.
That's a complete guess. I have no idea.
That's a complete guess. I have no idea.
This post was edited on 8/13/16 at 6:57 am
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