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"Zoom into this image so that the width of each vertical line is 1 mm or the whole image is 3.2 inches wide."

Is it possible to pick one system? Also, "3.2 inches" is difficult to measure. Rulers that measure in less than an inch use fractions, not decimals. It usually goes by 1/8ths, then 1/4 and 1/2, but some rulers have 1/16ths. 3/16" is .187 inches which is pretty close I guess.

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> "Zoom into this image so that the width of each vertical line is 1 mm or the whole image is 3.2 inches wide." > > Is it possible to pick one system? Also, "3.2 inches" is difficult to measure. Rulers that measure in less than an inch use fractions, not decimals. It usually goes by 1/8ths, then 1/4 and 1/2, but some rulers have 1/16ths. 3/16" is .187 inches which is pretty close I guess.

decimal inch rulers (& tape measures) are available; i have several. imo they're much more useful than fractional rulers in the context of machining, where the natural base unit, if you're not in metric, is 0.001” ('one thou')

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