GB
bridge around its axis. You now have local time. (Note: The local
time is approximately equal to the Winter Time).
Attention! For use in the Southern Hemisphere: Set the latitude
on the lower latitude scale (1b). There is no need to change the
date-setting!
The outer ring (1) is now positioned North/South. The inner ring
(6) is parallel to the equator and the bridge (3) is parallel to the
Earth's axis. Thus, you not only have a sundial, but also a model
of the Earth and a compass.