Survey Marker Center Mark

 

Geodetic control points are stamped with a variety of different markings and symbols to help surveyors identify them in the field.

 

Center marks, the simple symbols in the middle of a monument cap, indicate whether a monument is a vertical control point marking a precise elevation (commonly referred to as a bench mark), a horizontal control point established at a known latitude and longitude (commonly referred to as a station or mark), a reference marker, or something else entirely.

 

We’ve highlighted the various types of control points along with their corresponding marks and symbols for handy reference below.