You don't need a Range-finder or focus scale for hand held work, you just focus on the screen first, but you do need some kind of viewfinder or sight & frame finder and a s ahs been said they are only fitted on Press & Technical camera.

Press cameras have extremely limited movements, technical cameras are in between them and field cameras and so more practical. Graflex were far to late in introducing the Super Graphics, Linhof & MPP had filled the market after WWII.