 
			 
			MCQOPTIONS
 Saved Bookmarks
				| 1. | For adjustment purposes, the index arm can be rotated slightly with the help of a ________ screw.$ | 
| A. | tangent screw | 
| B. | levelling screw | 
| C. | cliff screw | 
| D. | focusing screw | 
| Answer» D. focusing screw | |