What statement best describes the relationship between rod reading and ground elevation in survey leveling?

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Multiple Choice

What statement best describes the relationship between rod reading and ground elevation in survey leveling?

Explanation:
In survey leveling, the line of sight of the instrument stays at a fixed height above the reference plane. The rod reading is the difference between that fixed instrument height and the ground elevation at the rod’s position. In formula form, the ground elevation equals the instrument height minus the rod reading. So, as the rod reading increases, the ground elevation decreases. That inverse relationship is why a higher rod reading means a lower ground elevation.

In survey leveling, the line of sight of the instrument stays at a fixed height above the reference plane. The rod reading is the difference between that fixed instrument height and the ground elevation at the rod’s position. In formula form, the ground elevation equals the instrument height minus the rod reading. So, as the rod reading increases, the ground elevation decreases. That inverse relationship is why a higher rod reading means a lower ground elevation.

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