What describes a vertical control point that indicates a spot elevation?

• A. A Vertical control point that indicates a Spot elevation.
• B. A Vertical control point with a tablet.
• C. A boundary monument with tablet.
• D. A recoverable mark with no tablet.

Answer: (A)

A vertical control point that indicates a spot elevation is a fixed reference used in surveying that not only provides a known height but also carries the exact elevation value for that location. The purpose of such a point is to anchor heights to a datum, so anyone measuring can transfer elevations accurately to maps or plans. When the point indicates a spot elevation, the precise numeric elevation is associated with that marker, making it the reliable source for the ground’s height at that spot. The other options describe markers or features that may exist for other reasons (markers with tablets, boundary monuments, recoverable marks without elevation data) but do not themselves convey the specific elevation reading, so they don’t fit as well.