McqMate
| Q. |
A’level line’is a |
| A. | horizontal line |
| B. | line parallel to the mean spheriodal surface of earth |
| C. | line passing through the center of cross hairs and the center of eye piece |
| D. | line passing through the objective lens and the eye-piece of a dumpy or tilting level |
| Answer» B. line parallel to the mean spheriodal surface of earth | |
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