DEGREE ARCSEC ARCMIN RADIAN CIRCLE DMSSEC DMSMIN DMSDEG HMSSEC HMSMIN HMSHOUR METER ANGSTROM NM MICRON MM CM INCH FOOT YARD M KM MILE PC KPC MPC TICK SECOND MINUTE HOUR DAY YEAR HZ KHZ MHZ GHZ M/S MM/S CM/S KM/S K MK JY MJY TAU