I live in Romania, Oradea and lately during my metal detection expeditions have come across motorcycle parts which I believe to be of World War 2 Wehrmacht NZ 350's.
For one of them I would like you help and support in propery identifying it. It's a plate I dug up yesterday and it belongs I believe to the carburetor (Vergaser) and it gives out specifications which I cannot figure out or pinpoint to some exact dimensions and shapes of the actual device.

and 2 close-ups :


And here some other items I found belonging to this model, plate number and petrol controler by MZAG. Can you tell me more details about MZAG ? Also the plate has been restored via oxalic acid bath but sadly the markings on it vanished along with the rust and 70 years burried in the ground...





Thank you kindly for your help





