Actually the International System of Units (SI), the modern form of the metric system, is preferred for many uses by the U.S. National Institute of Standards an

Actually the International System of Units (SI), the modern form of the metric system, is preferred for many uses by the U.S. National Institute of Standards and Technology (NIST). [1] - http://www.nist.gov/pml/wmd/metric/index.cfm http://www.nist.gov/pml/wmd/metric/index.cfm [2] - https://en.m.wikipedia.org/wiki/United_States_customary_units https://en.m.wikipedia.org/wiki/United_States_customary_unit...