measurement convention system(принятая международными соглашениями; This option allow you to select the units of measurement conventions (nautical, metric, imperial) displayed on the MFD. Stormik)
avoirdupois(принятая в Англии и США для всех товаров, кроме благородных металлов, драгоценных камней и лекарств ||
a system of weights used in many English-speaking countries. It is based on the pound, which contains 16 ounces or 7000 grains. 100 pounds (US) or 112 pounds (Brit) is equal to 1 hundredweight and 20 hundredweights equals 1 ton
Abbreviation: avdp, avoir)
