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"machinists Yardstick" From Cumplianos Page.


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Ive been lookin around but no go yet. Ive seen certain new Starrett straits but at 350+. Anyone know were to get this type if strait edge? Thanks



You have to have a machinists' yardstick to do this. If you are going to do any kind of bridge work or intonation diagnosis, you just have to have one. If you don't and if you don't want to spend the $50 - $75 it'll cost for a good one, skip this section. It is a metal ruler, 30 - 36 inches long, finely engraved with markings in English Standard and something called "Ford" measurements (actually very few people know that it's called that). Ford rule measurements (yes, first conceived by ol' Henry Ford) are inches divided into tenths. And each tenth is divided up in ten divisions, yielding 100ths (and a headache trying to read them), or (easier for my fifty-year-old eyes) in five divisions, yielding or 50ths (that is, with four engraved ticks that are read .02", .04", .06" and .08" . Of course the measurements in between the ticks are .01", .03", .05" and .09"). The advantage of the Ford rule is that you can measure off, to .01" accuracy, the results of a mathematical division involving inches. It like the next best thing to metric. I know, I know, we should all be using metric, but hey! Give me a break: life is changing too fast as it is....

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Any industrial supply (MSC, Garret Wade, McMaster-Carr) should have decimal inch rulers/machinists rules. Drop the yardstick and you should find it.

Me, I stick with my metric/imperial mix. Markings to half a mm, and you can interpolate .25mm with relative accuracy, which is more than close enough when working with wood, since a few degrees temperature shift will move things around more than that...

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