Question

A non-transit theodolite does NOT have

• A. Vernier scale
• B. face-left and face-right options
• C. spirit level
• D. cross-hair

Hint:

In surveying, transit theodolites allow full vertical rotation for face reversal, whereas non-transit theodolites do not.

Answer 1

The Correct Option is B

Step 1: Understanding non-transit theodolite. 
A non-transit theodolite differs from a transit theodolite in that its telescope cannot be completely rotated in the vertical plane (i.e., it does not allow for face reversal). 
Step 2: Analyze each option. 
(A) Vernier scale is essential for measuring angles and is present. 
(C) Spirit level is used for leveling the instrument. 
(D) Cross-hair is required for sighting and targeting objects.
(B) Face-left and face-right observations require full vertical rotation of the telescope, which is not possible in non-transit theodolites.