OldTools Archive
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247292 | CGRAF <adveniam@a...> | 2014‑04‑19 | Re: 16 inch centers |
I would be really interested to know the oldest example of uniform 16" spacing. My guess it was developed by trial and error and came to something near that standard in the early 1800's and as a rule somewhat later say 1920 or so. Those are both flat out guesses. Mike Graf |
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