<Dl> <Dd> bar, millimetre of mercury, ångström, nautical mile, barn, knot and neper </Dd> </Dl> <Dd> bar, millimetre of mercury, ångström, nautical mile, barn, knot and neper </Dd> <Dd> In the interests of standardising health - related units of measure used in the nuclear industry, the 12th CGPM (1964) accepted the continued use of the curie (symbol Ci) as a non-SI unit of activity for radionuclides; the becquerel, sievert and gray were adopted in later years . Similarly, the millimetre of mercury (symbol mmHg) was retained for measuring blood pressure . </Dd> <Ul> <Li> Non-SI units associated with the CGS and the CGS - Gaussian system of units (Table 9) </Li> </Ul>

Which is not a unit of measurement in the international system of units or si