Any links to previous discussions on this? The search feature seems to be of little help (nut is only 3 letters which is not indexed).
I know Stewmac sells a ruler that does this but wanted a rule or a formula that i could work out and lay out... probably just use the centers for laying out the tuning machines, then get Stewmacs ruler for the actual nut.
I think the consensus is that, as far as major, commercial-built instruments go, neither is correct - they do get farther apart as you go towards lower pitch strings, but not by the widths of the strings. At least that's what I've heard from people who're obsessive enough to take the time to measure these things .
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