Assertion: microscope's distance | /r/ObjectUse | used by all microscope manufacturers
Facets:
value: for many years
type: TEMPORAL
value: with finite tube length systems
type: OTHER
Source sentences:
text: A parfocal distance of 45 millimeters was used by all microscope manufacturers for many years with finite tube length systems, but this may be inadequate for high-performance infinity-corrected optics.