11. Armillary spheres were among the first complex mechanical devices.12. Two primary examples of modified equatorial sundials are bowstring equatorial and armillary dials. 13. So we designed an armillary to show the Milky Way galaxy at its center. 14. WHAT IS AN ARMILLARY SPHERE ? ( a) 15. The flag of Portugal features an armillary sphere. 16. In 1514, armillary sphere of King Manuel I, symbol of the discoveries. 17. Part of the excitement of viewing the armillary is contemplating the vastness of the heavens. 18. ANSWER : It's an armillary sphere, one of the oldest astronomical tools. 19. Richer also revealed how Gerbert made the planets more easily observable in his armillary sphere: 20. This armillary sphere was also described by Gerbert in a letter to his colleague Constantine.
