noun
1. : a mechanism for turning an equatorial telescope or a coelostat around its polar axis at the proper rate to keep a celestial body in the field of view
2. : a driving mechanism for a chronograph or other recording mechanism
noun
1. : a mechanism for turning an equatorial telescope or a coelostat around its polar axis at the proper rate to keep a celestial body in the field of view
2. : a driving mechanism for a chronograph or other recording mechanism
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012