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How are you guys determining vis?





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Posted by Eric S on March 11, 2007 at 18:22:09:

I know this seems like a stupid topic but what is the norm for guaging vis:

1) where an object just starts to become obscured.
2) The object is sort of obscured, about medium.
3) The object is almost completely obscured about 3/4 way.
4) The object is barely visible but still identifiable. If it was any further it would be gone.

I'm curious to see if there is a standard so if someone tell me, "Oh yah, the vis was great, about 30 feet", I want to know if that's still visible or barely visible.




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