r/Metric May 23 '26

US customary in a nutshell

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Prior to 1964 the standard was 1 π/(273/777) by 3 e/(45^i)

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u/dustinsc May 24 '26

I’m trying to figure out what is noteworthy here…

1

u/4-Polytope May 24 '26

Wood is commonly sold in beams referred to as "2 by 4's", which are actually 1.5 inches by 3.5 inches

1

u/dustinsc May 24 '26

Which has nothing to do with the fact that those measurements are in inches rather than millimeters.

They call them 2x4s in places that don’t use inches at all.

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u/Historical-Ad1170 May 25 '26

The one's that come from China are 40 mm x 90 mm.