0 a circular device used from ancient times until about the 18th century for measuring the position of stars, and on ships for calculating the ship's position: --
The collection includes Islamic astrolabes made from the 11th through 16th centuries.
On an astrolabe, the corners of the different aspects could be lined up on any of the planets.
The clock was remodelled approximately once every century; in 1898 the astrolabe was replaced with a heliocentric model of the solar system.
He developed key technologies including the equatorium and universal latitude-independent astrolabe.
The side with the astrolabe has hour lines, a calendar, zodiacs, star positions, astrolabe projections, and a vertical dial.
While latitude could be marked in degrees as observed by astrolabe or quadrant, easting could only be given in distance.
The astrarium was primarily a clockwork equatorium with astrolabe and calendar dials, and indicators for the sun, moon, and planets.
He also wrote on mechanical devices like the astrolabe and sundial.
In recent times, astrolabe watches have become a feature of haute horologie.
