Commonwealth Numbered Regulations

1986 No. 172 NATIONAL MEASUREMENT REGULATIONS (AMENDMENT) - REG 8

8. Regulation 34 of the Principal Regulations is amended by adding at the end
the following sub-regulations-

"(5) The millibar, being a unit of measurement equal to 100 pascals, is an
additional legal unit of measurement for pressure for use-

   (a)  for the purpose of measuring air pressure in relation to aviation; or

   (b)  for the purpose of contracts, dealings or other transactions made or
        entered into for any work, goods or other thing that is to be done,
        sold, carried or agreed for by measurement of air pressure, and may be
        referred to by the symbols 'mb or mbar'.

"(6) A millimetre of mercury, being a unit of measurement equal to 133.322 19
pascals, is an additional legal unit of measurement of pressure for use-

   (a)  for the purpose of measuring blood pressure; or

   (b)  for the purpose of contracts, dealings or other transactions made or
        entered into for any work, goods or other thing that is to be done,
        sold, carried or agreed for by measurement of blood pressure, and may
        be referred to by the symbol 'mmHg'.".