This is a preparation task for finishing the UTM grid. See

http://en.wikipedia.org/wiki/Universal_Transverse_Mercator_coordinate_system

and

http://upload.wikimedia.org/wikipedia/commons/e/ed/Utm-zones.jpg

The following patches should get rebased to master:

https://projects.kde.org/projects/kde/kdeedu/marble/repository/revisions/c54d79573434ea3cc7bb5689c55805c35cd25a54

https://projects.kde.org/projects/kde/kdeedu/marble/repository/revisions/a9cda4111d5fb453c208c7900fc1601449b79390

https://projects.kde.org/projects/kde/kdeedu/marble/repository/revisions/18057e57ea7ac0025a51115228ed6d48f21a601a

https://projects.kde.org/projects/kde/kdeedu/marble/repository/revisions/82fe5ff62ecb55be9c27f53c85dc1a5ae3c2098b/diff/src/plugins/render/graticule/GraticulePlugin.cpp

 The code should be rebased to current master and cleaned up a bit. Then create a review request without submission to master (since the rest of the feature needs to be implemented first in a follow-up task.