The 1920s gave us three truly enduring door handle designs.
In Paris, the architect Mallet-Stevens cut a tube in half and mitred it back together again (FSB 1076). The open end was rounded. In Vienna, meanwhile, the philosopher Ludwig Wittgenstein was busy bending a brass tube through 90 degrees (FSB 1147). He, too, rounded off the end.
Someone had the bright idea of slicing off the round tip. That was the simple way FSB 1075 turned out.
Coordinates with FSB window lever design 3422.