Assertion: sextant's horizon mirror | /r/CapableOf | sit on base
Facets:
Source sentences:
text: The horizon mirror sits on a base that can be rocked by means of two spring loaded screws to remove side error and the sub-base below it can be rotated by a further spring loaded screw to remove index error.
text: The horizon mirror sits on a base that can be rocked by means of two spring loaded screws to remove side error and the sub-base below it can be rotated by a further spring loaded screw to remove index error.