Miscellaneous unit of measurement code from the United Nations Economic Commission for Europe Recommendation No. 20, "Codes for Units of Measure used in International Trade". The appinfo for the schemas A code list that enumerates units of measurements for a length value. angstrom astronomical unit chain centimetre decametre decimetre fathom femtometre foot hectometre inch kilometre light year metre milli- inch mile (statute mile) millimetre nautical mile nanometre parsec picometre micro- inch micrometre (micron) yard A code list that enumerates units of measurement for a weight value. megagram centigram hundred weight (UK) hundred pounds (cwt)/ hundred weight (US) decagram decigram decitonne gram grain hectogram kilogram kilotonne pound milligram ounce stone (UK) tonne (metric ton) ton (UK) or longton (US) ton (US) or short ton (UK/US) troy ounce or apothecaries' ounce A code list that enumerates units of time. year tropical year day hour kilosecond minute millisecond nanosecond second microsecond A code list that enumerates units of measurement for a speed or velocity. centimetre per second foot per minute foot per second inch per second kilometre per hour knot metre per minute metre per second mile per hour millimetre per second