This can be argued both ways, but, metric or english units, there is no difference in accuracy. One is not outdated. Neither one solves certain problems with dividing a given unit of length, or perhaps time.Either one has some strengths in certain areas, but linear measurements ain't gonna show a real difference. UNLESS of course you are going to compare something to a specific wavelength of light. I don't know about ya'll but I don't do that in my forge. Math is not an exact science, it is very much a convenience for explaining a numerical phenomenon.
If you can use a caliper to read a ten thousandths of an inch, then you know how accurate inches can be. A metric caliper is no more accurate.
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Spare Time? Is that like day off? I've heard of those...never had one of my own. Mark Schwenk- artist/blacksmith at Frog Valley Forge
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