11. The Carrera chronograph , designed by Jack Heuer, was introduced in 1963. 12. Less simple chronographs use additional tachymeters for rapid calculations of speed or distance. 13. Louis Moinet invented the chronograph in 1816 for use in tracking astronomical objects. 14. He designs such things as spectacle frames and chronographs in addition to clothing. 15. All chronographs tested were mechanical hand-wound models. 16. IWC also used a JLC meca-quartz movement in their older Portugieser chronographs . 17. Heuer introduced its first wrist chronograph in 1914. 18. Heuer's first automatic chronographs were the Autavia, Carrera, and Monaco. 19. Chronographs were also used heavily in artillery fire in the mid to late 1800s.20. It is constructed of a mainplate, calendar plate, and chronograph top plate.
