The Compass-
an instrument used by sailors to determine their location by observing the positions of stars
Pilots and sailors first instrument used in flying and sailing was a compass so they could orient themselves in what direction they've been heading and should head based on time and speed.
Sailor's used to use a compass and a map.
Compass
A telescope.
The speed and direction of a tornado can be determined using Doppler radar by measuring how far the tornado moves between sweeps and in what direction.
The word compass can be a noun or a verb. The noun form is a device used to determine direction. The verb form means to surround.
an instrument used by sailors to determine their location by observing the positions of stars
Compass
Sextant
Radar is an object-detection system that uses radio waves to determine the range, altitude, direction, or speed of objects. It can be used to detect aircrafts.
A devise used to determine direction
Resource
Astrolabe
The direction of magnetic North.
To determine wind speed by whatever device is used.
The Inch-cape Bell placed by the Abbot of Aberbrothok, used to warn the sailors about the Inch-cape Rock in a stormy weather and as a impact, the sailors used to change the direction of the ship.