Assertion: roof prism | /r/HasAspect | deviation
Facets:
value: between 45°
type: OTHER
value: typically
type: DEGREE
Source sentences:
text: Furthermore, the roof prism has no displacement and a deviation typically between 45° and 90°, while in a single Porro prism the beam is typically deviated by 180° and displaced by a distance of at least one beam diameter.