Click the image and pull a line. Make your own experiments with Viking geometry.

The bearing-dial is constructed based on "dagmalastadr" and "eyktarstadr", which means the time of the day where the period from sunrise to noon and from noon to sunset was divided in four parts.

 

 

 

 

 

 

A Nomogram showing "eyktarstadr" on different latitudes can be seen here.