Assertion: sextant's arc | /r/HasProperty | one-sixth of a circle
Facets:
value: usually
type: DEGREE
Source sentences:
text: Mainly used at sea, the tool is so named because its arc is one-sixth of a circle –
text: The instrument got its name from the fact that it is equippeded with an arc that is usually one-sixth of a circle or more precisely 60 degrees (a circle has 360 degrees in total).