Assertion: helical gear | /r/ObjectUse | used with the helix angle of one
Facets:
value: quite commonly
type: DEGREE
Source sentences:
text: Quite commonly, helical gears are used with the helix angle of one having the negative of the helix angle of the other; such a pair might also be referred to as having a right-handed helix and a left-handed helix of equal angles.