Parallel cut
Geographic latitudes in which a cylinder or cone used for map network designs intersects the earth is referred to as a cut parallel or cut parallel circle. Such cylinder or cone projections are exactly lengthwise along the parallels .
The two parallels are usually just within the area to be mapped:
- for a picture of all of Europe z. B. at 40 ° and 65 ° latitude,
- on the world map 1: 2.5 million (18 ° latitude zones) each 3 ° within the sheet section
In the case of the International World Map (IWK) 1: 1 million, on the other hand, two circles of latitude are not - as has often been claimed - true to length, but two meridians , each 4 ° from the edges of the sheet.
literature
- Viktor Heissler , Günter Hake : Cartography, Volume I , 4th edition. De Gruyter, Göschen Collection Volume 30a / 30b, Berlin 1970
- Josef Hoschek: Mathematical foundations of cartography . BI university paperback 443 / 443a, Mannheim 1969