noun
: a device that is used in harbor-defense gunnery for determining the range deviations of shots from a target and that consists essentially of two arms in the form of a T along whose cross member pegs are placed at regular intervals
noun
: a device that is used in harbor-defense gunnery for determining the range deviations of shots from a target and that consists essentially of two arms in the form of a T along whose cross member pegs are placed at regular intervals
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012