linear-tracking

[ lin-ee-er-trak-ing ]
/ ˈlɪn i ərˈtræk ɪŋ /

adjective

(of a tone arm) designed to move across a phonograph record in a straight line, instead of an arc, so that as the needle tracks the groove, its orientation remains unchanged.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019