Assertion: collimator | /r/AtLocation | the draw tube
Facets:
value: without using a diagonal
type: MANNER
Source sentences:
text: The collimator is placed in the draw tube without using a diagonal prism or mirror, and the drawtube axis is checked for alignment by seeing if the beam passes through the center of the objective.
text: The collimator is placed in the draw tube without using a diagonal, and the drawtube alignment is checked by seeing if the beam passes through the center of the objective.