0 a model showing the positions of the stars and planets and consisting of several circles forming a sphere (= ball shape):
Greek astronomer Ptolemy is usually associated with the earliest armillary spheres.
Astronomical highlights are the four brass armillary spheres made by Antonio Lupicini.
He made the armillary sphere for the new herb garden at Wisley.
The armillary sphere has a diameter equal to width and is equidistant from the upper and lower edges of the flag.
Other elements depicted include measurement instruments, precious caskets, a bell, a shell, an armillary sphere, vases, bottles and others.
This is the principle behind the armillary sphere and the equatorial bow sundial.
Just as the armillary sphere is largely open for easy viewing of the dial, such non-planar surfaces need not be complete.
The clock has an armillary sphere with a diameter of 40 cm.
