On Dec 19, 8:51 pm, Mike Granby wrote:
I find myself holding a 747 transponder control head that I bought on
eBay as a toy for the kids. But, with echos of Spinal Tap's guitarist
in my head, I notice that the selector knobs allow the digits 0 thru 8
to be selected. What gives?

Yeah, they frequently do on large airplanes for some reason. Don´t
know why, we never use ém


Bertie