Noun
tone arm (plural tone arms)
a light, balanced arm that holds the pickup cartridge on a record player
Arm systems The tone arm (or tonearm) holds the pickup cartridge over the groove, the stylus tracking the groove with the desired force to give the optimal compromise between good tracking and minimizing wear of the stylus and record groove. Source: Internet
At its simplest, a tone arm is a pivoted lever, free to move in two axes (vertical and horizontal) with a counterbalance to maintain tracking pressure. Source: Internet
In a perfect world: * The tone arm must track the groove without distorting the stylus assembly, so an ideal arm would have no mass, and frictionless bearings, requiring zero force to move it. Source: Internet
The position of the tone arm was used by some turntables as a control input, such as to turn the unit off or to load the next disk in a stack, but was ignored in simple units. Source: Internet
The tone arm got its name before the age of electronics. Source: Internet