Build a câmera like that is a sort of love in with tools and an exercice to the mind
It is a pity that today there are not such genious that can develop such devices
Just after WWII the proliferation of câmeras of all sort and styles came to the light and found buyers world over.
Great corporations lock the inventiveness of people and request large amounts of Money to sell such items
In 2013 Leica made his 100 years of conception. Someone in São Paulo developed a M series in 1:1 scale for demonstation/decorative purposes in a like do-it-yourself. It was totally made in achrylic sheets and should be sell at Us$30 per unit Leica people foud it an abusive price! and did not accept his Project unhappily....