The oscilloscope camera I know that is a good source of shutters is the Shackman 7000. I've had three of them and removed the shutters. They have a nice Copal Press #0 with a simple plastic lens with only two elements that is very easy to remove (as is the shutter) so if you need a #0 shutter, that camera is one to look for. I personally prefer old rimset Compurs to the Copal Press #0 so I have sourced most of my #0 shutters from 6x9 folders but I do use all three of the Copal Press #0s I have from Shackmans, one has a Mamiya TLR 2.8/80 in it and the other two hold Componon-S 5.6/100 and 5.6/135 which I find shoot very well, especially at close distance. I chose to put my G-Claron 9/150 in a 1930s rimset Compur #0 removed from a Kodak Vollenda 620 folder.