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The theodolites used for making tacheometric observations by optical wedge system, are. | |
A. | provided with stadia hairs in front of eye piece [Wrong Answer] |
B. | not provided with stadia hairs at all [Wrong Answer] |
C. | fitted with a glass wedge inside the telescope [Wrong Answer] |
D. | fitted with a glass wedge in front of telescope. [Correct Answer] |