Assertion: sextant | /r/HasProperty | preset
Facets:
value: to the expected altitude
type: OTHER
Source sentences:
text: I have used it successfully on a boat but it has one main problem: the telescope is very small and the field of view is narrow; this makes finding a star very difficult unless the sextant is already preset to the expected altitude.
text: I have used it successfully on a boat but it has one main problem: the telescope is very small and the field of view is narrow; this makes finding a star very difficult unless the sextant is already preset to the expected altitude.