1.

Which of the following are among the fundamental lines of a Theodolite?1. The vertical and horizontal axes2. The lines of collimation and axis of the plate levels.3. The bubble line of the altitude level

A. 1 and 2 only
B. 1 and 3 only
C. 2 and 3 only
D. 1, 2 and 3
Answer» E.


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