What is another word for volvelle?
Pronunciation: [vˈɒlvɛl] (IPA) 
Volvelle is a term that refers to a mechanical device that is used in order to represent data or information by rotating disks or layers. This type of device is also known as a wheel chart or a spinwheel. Some synonyms for volvelle include the terms astrolabe, orrery, and armillary sphere. An astrolabe is a type of volvelle that is used for navigation or finding the position of celestial objects. An orrery is a volvelle that is used to represent the movements of the planets in the solar system. An armillary sphere is another type of volvelle that is used to show the movement of celestial objects around the earth.
