Assertion: sextant's horizon mirror | /r/HasProperty | half-silvered
Facets:
value: half
type: DEGREE
Source sentences:
text: Whole-horizon sextants use a half-silvered horizon mirror to provide a full view of the horizon.
text: Whole-horizon sextants use a half-silvered horizon mirror to provide a full view of the horizon.
text: Whole-horizon sextants use a half-silvered horizon mirror to provide a full view of the horizon.
text: Whole-horizon sextants use a half-silvered horizon mirror to provide a full view of the horizon.
text: Many newer sextants have whole-horizon mirrors, which is half-silvered to provide a full view of the horizon.