3 ms·
the inch changed in 1959 from exactly 1/39.37 m to exactly 2.54 cm; the survey foot is for compatibility with large-scale measurements based on old inches.
by yuubi 4y ago
the inch changed in 1959 from exactly 1/39.37 m to exactly 2.54 cm; the survey foot is for compatibility with large-scale measurements based on old inches.
- mbg721 4y agoSo that's why my windows are leaky! I knew there had to be a reason.