Guard stone for highlighting and maintaining visibility of geodesic territorial signs

摘要

Bollard for highlighting and maintaining visibility of surveying regional brands has formed on the bollard aneurysms (5) for the location of the land mark. In two opposite oblique walls are formed holes (2) for the nail securing the bollard. The upper square area (6) Dimensional corresponds to the location of the land mark in the bulge (5) bollard.