MCQOPTIONS
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| 1. |
Pick up the correct statement from the following : |
| A. | the tangent screw enables to give small movement under conditions of smooth and positive control |
| B. | standing on the tripod is the levelling head or trib arch |
| C. | the levelling screws are used to tilt the instrument so that its rotation axis is truly vertical |
| D. | all the above. |
| Answer» E. | |