3/8 lo pro and 3/8 sprocket differences?

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Not fair Sawtroll, I only have a cheap set of calipers and .365" was close enough for me ;)

Well, I have later learned that .366 actually is more correct than .367 - but the real point is that it isn't .375.

3/8" is acceptable as a "name" on the pitch - while "translating" it to .375 gives the impression of a more accurate number, and isn't acceptable as a designation when it isn't true. If they had called it just .37 (not .370 though) instead, it would have been acceptable.
 

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