GPS?
The Sextant has not been replaced they are still available to buy new and are carried on every commercial vessel.
The piano replaced the harpsichord as the most dominant instrument.
The harpsichord was replaced by the piano.
electric guitar.
A Lute - and a guitar.
A Lute - and a guitar.
No modern instrument replaced the viola.
It is a mediaeval instrument for measuring the altitude of the sun and other sky objects, now replaced by the sextant.
The sextant
The sextant
A sextant
A sextant.
A sextant.
Sextant
The sextant and the compass.
A sextant is a navigational instrument that sights upon the stars to determine a ship's position. This instrument was crucial to naval navigation until global positioning became a reality in the late 20th century. "Henry the Navigator prized his sextant while on his journeys to the New World." "The ship's position is determined by the use of the ship's navigator using a sextant."
The sextant.
The sextant and the clock.