Assertion: pocket watch's jewel | /r/ObjectUse | used as bearing
Facets:
value: in a watch
type: LOCATION
value: for the gears
type: PURPOSE
Source sentences:
text: Those standards stipulated that all watches must be open-faced, be a size 16 (movement size of 1.7 inches) or size 18 (movement size of 1.766 inches), have a minimum of 17 jewels (used as bearings for the gears), and be adjusted to work in temperatures of 34°F to 100°F, among other qualities.
text: This refers to the jewels used as the bearing in a watch, not any jewels used to accessorize the Colibri pocket watch.
text: Jewels have been used as bearings inside English pocket watches since at least the early 18th century.