Assertion: gear's ratio | /r/CapableOf | determine the number of teeth
Facets:
value: on the blank
type: LOCATION
Source sentences:
text: The two shafts are rotated at a proportional ratio, which determines the number of teeth on the blank; for example, for a single-threaded hob if the gear ratio is 40:1 the hob rotates 40 times to each turn of the blank, which produces 40 teeth in the blank.