Assertion: microscope's objective | /r/CapableOf | inscribe the magnification
Facets:
value: briefly
type: MANNER
value: on it
type: LOCATION
Source sentences:
text: Briefly, each objective has inscribed on it the magnification (e.g. 10x, 20x or 40x etc.); the tube length for which the objective was designed to give its finest images (usually 160 millimeters or the Greek infinity symbol); and the thickness of cover glass protecting the specimen, which was assumed to have a constant value by the designer in correcting for spherical aberration (usually 0.17 millimeters).