Assertion: sextant | /r/CapableOf | use artificial horizon
Facets:
value: by observing a celestial body
type: MANNER
Source sentences:
text: Sometimes the altitudes of celestial bodies are measured with a sextant using an artificial horizon by observing a celestial body and its image reflected in a cup filled with an oily liquid; in this case, the cup must be on a fixed base.
text: Sometimes the altitudes of celestial bodies are measured with a sextant using an artificial horizon by observing a celestial body and its image reflected in a cup filled with an oily liquid; in this case, the cup must be on a fixed base.