Assertion: collimator's axis | /r/Causes | problem
Facets:
value: for setting circles users
type: TRANSITIVE-OBJECT
Source sentences:
text: Secondly, if the diagonal is not offset in two dimensions, with the result that it looks centered under the focuser, the mechanical axis will not be concident to the optical axis, causing problems for setting circles users, unless the software can compensate for this type of error.