a transverse
mercatorprojection with tangential coincidence,
mostly used as a zone system (Streifensystem) with 3°- zones.
The main meridian (Hauptmeridian) is equidistant.
Germany, former West-Germany: 4 3°-Zones (Zone 2 (6°E),
Zone 3 (9°E), Zone 4 (12°E), Zone 5 (15°E)) on
Bessel 1841 former Est-Germany: 2 3°- Zones (Zone 4 (12°E),
Zone 5 (15°E)) on Krassowskij