Question
Download Solution PDFWhich of the following statements regarding the vertical circle of a theodolite is correct?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
- In a theodolite, the graduation circle (also known as the vertical circle) is attached to the telescope, so when the telescope moves (either up or down to measure vertical angles), the graduation circle moves with it.
- This allows the angle of elevation or depression to be measured relative to the horizontal plane.
- On the other hand, the Vernier scale is fixed in place, and its purpose is to allow for more precise readings of the graduation circle's movement.
- As the telescope and the graduation circle move, the Vernier scale stays stationary, and the user reads the angular measurement from the point where the Vernier scale aligns with the graduation circle.
Last updated on May 28, 2025
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