Assertion: box sextant | /r/CapableOf | reliable measurements
Facets:
value: within one minute of arc
type: TEMPORAL
Source sentences:
text: I include a picture of my Box sextant which is a beautifully made precision instrument, which though only about 75mm in diameter is capable of reliable measurements within one minute of arc.
text: I include a picture of my Box sextant which is a beautifully made precision instrument, which though only about 75mm in diameter is capable of reliable measurements within one minute of arc.