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Re: [Phys-l] Another uncertainties question...



This reminds me of specification in mechanical drawings I've seen (and
written), e.g. 2.010 " +0, -.002 Why not 2.009 +/- 0.001?

This is so the machinist making a part from the drawing, for example, knows s/he is allowed to be as much as .002 under but not the least bit over, when targeting 2.010 as the part's size.


Stefan Jeglinski