Assertion: sextant | /r/HasProperty | rocked to side
Facets:
value: from side
type: MANNER
Source sentences:
text: When the navigator is satisfied that the body is perfectly on the horizon (with planets and the sun, the sextant is rocked from side to side to ensure that the circumference of the body is tangential to the horizon), the angle is then read off the scale on the sextant.