Since the Mendenhall Order of 1893, the U.S. yard and pound and all units derived from them have been defined in terms of the metric units of length and Mass , the meter (m) and the kilogram (kg);
(all units; derived; from them) (the U.S. yard and pound and all units; have been defined; in terms of the metric units of length and Mass , the meter (m) and the kilogram; T:Since the Mendenhall Order of 1893)
all units the U.S. yard and pound and all units
derived have been defined
from them
in terms of the metric units of length and Mass , the meter (m) and the kilogram T:Since the Mendenhall Order of 1893