Imperial system gives you more freedom to select the appropriate resolution fraction. I can measure in whole, half, quarter units. Even eighths, sixteenths, thirty-secondths, etc. Metric only gives you tenths.

What if you are measuring something and cm is too coarse but mm is too fine. What if the smallest meaningful unit is .25? Why would I care about .1 .2 .3?

This ability to select the appropriate resolution is what makes imperial system superior. You select the exact resolution that is appropriate.

In construction, framers only care up to ¼". Drywallers up to ⅛". Finish carpenters up to ¹/16". A joiner up to 1/64".

You just don't have that freedom of resolution with metric.

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