Hi
Here are maps of your areas TM and TN.
The given maps are slightly larger than your actual squares.
From the red star in the center measure 14 kilometers to north/south
and 21.5 km to west/east, than you have the true Mitteltrapeze TM and TN. A kilometer marker is at the right upper corner of the Map.
TM
http://atlas.mapquest.com/maps/map.a...n=45&longsec=0
TN
http://atlas.mapquest.com/maps/map.a...n=15&longsec=0
To make your own calculations take my LUMA calculator:
http://www.gyges.dk/reporting_grids.htm
bye,
FrankieS