But it is degrees and minutes as indicated by ° and '. Some more information in this book:
https://books.google.fi/books?id=ebXNDwAAQBAJ&printsec=frontcover#v=onepage&q&f=false
Unfortunately that is an alternative history site that mixes fact and fiction.
According to other sources the M.S.406 was one of the most agile monoplane fighters Finland had, but it was not a stabile shooting platform, had poor climbing performance and the armament was unreliable.
The Grob G109 motorglider has throttle in the middle. In the middle of the final you change your right hand on the stick and use air brakes with your left hand.