Aeron.
a flight instrument that measures the angle of roll about an aircraft's horizontal axis, thereby indicating whether or not the aircraft is skidding or slipping. Also called ball indicator, slip indicator . Cf. bank-and-turn indicator .
Aeron.
a flight instrument that measures the angle of roll about an aircraft's horizontal axis, thereby indicating whether or not the aircraft is skidding or slipping. Also called ball indicator, slip indicator . Cf. bank-and-turn indicator .
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012