2 ms·
Since at least 1975 when a federal law was passed making metric the “preferred” measurement system. In the 80s I was doing metric conversions in years 4 or 5.
by kasey_junk 8y ago
Since at least 1975 when a federal law was passed making metric the “preferred” measurement system.
In the 80s I was doing metric conversions in years 4 or 5.