grid system ![click to hear : grid system](/images/speaker-vert.gif)
Gradnetz ![click to hear : Gradnetz](/images/speaker.jpg)
lines of longitude ![click to hear : lines of longitude](/images/speaker-vert.gif)
Längengrade ![click to hear : Längengrade](/images/speaker.jpg)
Western meridian ![click to hear : Western meridian](/images/speaker-vert.gif)
westlicher Meridian ![click to hear : westlicher Meridian](/images/speaker.jpg)
prime meridian ![click to hear : prime meridian](/images/speaker-vert.gif)
Nullmeridian ![click to hear : Nullmeridian](/images/speaker.jpg)
Eastern meridian ![click to hear : Eastern meridian](/images/speaker-vert.gif)
östlicher Meridian ![click to hear : östlicher Meridian](/images/speaker.jpg)
lines of latitude ![click to hear : lines of latitude](/images/speaker-vert.gif)
Breitengrade ![click to hear : Breitengrade](/images/speaker.jpg)
Arctic Circle ![click to hear : Arctic Circle](/images/speaker-vert.gif)
nördlicher Polarkreis ![click to hear : nördlicher Polarkreis](/images/speaker.jpg)
Equator ![click to hear : Equator](/images/speaker-vert.gif)
Äquator ![click to hear : Äquator](/images/speaker.jpg)
Tropic of Capricorn ![click to hear : Tropic of Capricorn](/images/speaker-vert.gif)
Wendekreis des Steinbocks ![click to hear : Wendekreis des Steinbocks](/images/speaker.jpg)
parallel ![click to hear : parallel](/images/speaker-vert.gif)
Breitenkreis ![click to hear : Breitenkreis](/images/speaker.jpg)
Tropic of Cancer ![click to hear : Tropic of Cancer](/images/speaker-vert.gif)
Wendekreis des Krebses ![click to hear : Wendekreis des Krebses](/images/speaker.jpg)
Antarctic Circle ![click to hear : Antarctic Circle](/images/speaker-vert.gif)
südlicher Polarkreis ![click to hear : südlicher Polarkreis](/images/speaker.jpg)