Assertion: tone arm | /r/CapableOf | pivot about shaft
Facets:
value: to the extent
type: DEGREE
Source sentences:
text: The track of collar 21 along tone arm 17 (as defined for example by the length of groove 22), the distance through which carriage 27 may move along screw 25, and the length of resilient member 28 are selected so that the tone arm 17 may pivot about shaft 18 to the extent that the needle (not shown) on pick-up 20 comes into functional contact with a phonograph record.