A sextant, possibly.
Sextant is used to measure the angle between any two visible objects.Its primary use is to determine the angle between a celestial object and the the horizon which is also know as objects altitude.
Theodolite on land, sextant at sea
That is the principle of a sextant.
The sextant.
you can find sextant on history.com
you use a sextant to navigate.
you draw a sextant by looking at googler in the images.
the sextant helped me navagate my way to alaska
how many years that the sextant become a symbol of navigation
The sextant
The sextant
Yes Christopher Columbus did use a sextant along with a compass, ampoletta, and a cross staff.
The term "sextant" comes from the Latin word "sextans," meaning one-sixth. This refers to the instrument's ability to measure angles up to one-sixth of a circle (60 degrees). The sextant is commonly used in navigation to determine the altitude of celestial bodies.
A sextant
my mom
GPS? The Sextant has not been replaced they are still available to buy new and are carried on every commercial vessel.