a method of ascertaining position by the use of a map showing prominent features of the terrain and enabling one to sight through them to obtain a fix.
[ 1935-40; named after F. W. BESSEL ]
a method of ascertaining position by the use of a map showing prominent features of the terrain and enabling one to sight through them to obtain a fix.
[ 1935-40; named after F. W. BESSEL ]
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012