The line about which a rotating body, such as the world, turns
Blowin like
... [DOC] [TLE] Cam Trak Allows Portraits Of The Stars As The World Turns ... [PAR] Jul 7, 1989 ... Cam Trak Allows Portraits Of The Stars As The World Turns ... mount, such as the 
Cam Trak, compensates for the rotation of the Earth, ... for location use, or from 
the in-line power supply included it each unit.