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				Originally posted by TreeDoc  
Inclinometer 
			
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 HEY DOC
I THINK ROY DIED AND WENT TO HEAVEN, HE HASN'T MADE A POST IN A COONS AGE. 
THAT WAS WHAT I THOUGHT IT WAS FOR ALSO, TO MEASURE ANGLES, BUT I DON'T KNOW HOW THAT COULD BE DONE WITHOUT MARKING THE LENS SOMEWAY. JUST CENTERING THE OBJECT IN THE LENS WOULDN'T BE VERY PRECISE. 
OH WELL.