This is probably machine doubling since I can't find any info on this, but I'd better get the experts opinions. Any opinions?
Yep! Whenever it appears flat and shelf-like, you can bet your patootie that it is machine doubling.......or mechanical doubling.......or strike doubling........synonymous! Chris
So let me see if I get this right (and tell me if I'm not), if it looks like the doubling effect is occurring on two or more levels or planes, then machine doubling. If the same effect occurs flush like the '55, those are the only desirable ones (RPM,OMM,DDO,DDR etc.). Yay or Nay Yet?