Hello! I found this and it is under restoration , it says " Winkelschluss " on 2 of the instruments and " Tiefer " on one , a friend sent me a pic but it is missing the FL nr on the back , but on that you can see the scale 0-90 , ( depth ?? ) 2 times. But unfortenly the scales on the other ( Winkelschluss ?) is missing , the scales were printed on thin clear plastic and is gone... Does any one know what the scale can be??

It was used together with this box ( BW pic) .

Best U