Assertion: floating collimator | /r/CapableOf | render great service
Facets:
value: to practical astronomy
type: TRANSITIVE-OBJECT
Source sentences:
text: An English physicist Henry Kater was the inventor of the floating collimator, which rendered a great service to practical astronomy.
text: An English physicist Henry Kater was the inventor of the floating collimator , which rendered a great service to practical astronomy.