depends on the era you are talking about.... some people used wood, some used steel, metal, and some even just use plastic protractors, tie a string on it and put a straw on the top.
They used the astrolabe and compass. The astrolabe was invented by Muslims, and the compass by the Chinese.
It farted
alchemy is the wrong answer culo hole
The astrolabe, jackstaff and the compass.
the ships and the nevigational instrument astrolabe it uses the postion of the sun to determine direction latitude and local time
There is no conclusive proof that Hypatia invented the astrolabe. It is believed that she made significant contributions to mathematics and astronomy, but the exact origins of the astrolabe are unclear as it existed before her time.
atrolabe came first, the astrolabe was invented before the sextant, and the sextant was the model that made the compass
The astrolabe is a very ancient astronomical computer for solving problems relating to time and the position of the Sun and stars in the sky. Several types of astrolabes have been made. By far the most popular type is the planispheric astrolabe, on which the celestial sphere is projected
compass, and the astrolabe
The spherical astrolabe was invented by Abū Ishāq Ibrāhīm al-Zarqālī, a Muslim astronomer and engineer from Al-Andalus (modern-day Spain). Al-Zarqālī's spherical astrolabe was an improvement on earlier flat astrolabes, allowing for easier calculations of celestial positions and timekeeping.
The compass and the astrolabe.
== == the astrolabe is to find the altitude of a stellar object
astrolabe=star+mechanical clock
Astrolabe: star + Mechanical Clock
The word astrolabe is a noun. The plural is astrolabes.
An astrolabe is an old instrument used to calculate the position of celestial bodies. Here are some sentences.I found an antique astrolabe in an old store.An astrolabe was used before the sextant was invented.Polish that astrolabe so it doesn't tarnish.
The compass and the astrolabe made navigation by sea, and therefore exploration, possible.