

MCQOPTIONS
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1. |
Pick up the correct statement from the following : |
A. | the lines of sight while observing back sight and fore sight lie in the same horizontal plane |
B. | the staff readings are measurements made vertically downwards from a horizontal plane |
C. | the horizontal plane with reference to which staff readings are taken, coincides with the level surface through the telescope axis |
D. | all the above. |
Answer» E. | |