Function: noun
Date: 1869
: a graduated scale or wheel on the mounting of an equatorial telescope for indicating right ascension or declination
Function: noun
Date: 1869
: a graduated scale or wheel on the mounting of an equatorial telescope for indicating right ascension or declination
Merriam Webster Collegiate English Dictionary. Merriam Webster - Энциклопедический словарь английского языка. 2012