sextant

Noun

/ˈsɛkstənt/

A sextant is a navigational instrument used to measure the angle between two objects, typically used in maritime and aerial navigation.

1. The sailor used a sextant to find their position during the night.

2. By calculating the angle of the North Star, the navigator was able to successfully chart the course.

It helps navigators determine their latitude and longitude by measuring the angle of celestial bodies above the horizon.