Optic calibration device 'Gebr. Wichmann, Berlin' + canvas pouch
A very scarce original wartime device for calibrating various WWII German optical instruments, complete with its original canvas storage/carry pouch!
The item features the original maker plaque for 'Gebr. Wichmann, Berlin' and also an impressed Waffenamt proof stamp just below. It also has the 'D.R.G.M.' acronym for the Deutsches Reichsgebrauchsmuster relating to item design patent.
This is one of only a couple of surviving examples which we have ever seen!