Manhole cover and trigonometric point Basis Bonn A, Kölnstraße, Bonn, NRW, Germany
Posted by: Maisi2
N 50° 45.811 E 007° 03.323
32U E 362859 N 5625330
The manhole cover is located at Kölnstraße/Egerstraße, Bonn Buschdorf, NRW, Germany.
Waymark Code: WMT0WR
Location: Nordrhein-Westfalen, Germany
Date Posted: 09/05/2016
Views: 6
This manhole cover acts at the same time as a trigonometric point of the geodetic baseline "Basis Bonn" (Point A). The Berlin General Staff Officer Johann Jacob Baeyer has used this line as the basis for the triangulation of the Rhineland in the 19th century.