Bill M wrote:

For those who missed it the first time...
http://www.jogis-roehrenbude.de/Roehren-Geschichtliches/Mag_Augen/Mag_Augen2/6E5M.htm



Looks like it's a 7-pin miniature pinout, but on a big fat plastic base
so you may actually be able to shoehorn an octal magic eye tube in there.

Call AES and see what kinds of magic eye tubes they have in stock that
will physically fit into place and have 6V filaments.

The electronic stuff is easy. The schematic on that web site basically tells
you all you need to know; where the plate, filament, grid and deflection pins
are and what voltages they need to see. With this you can adapt just about
any magic eye tube if you can make it physically fit.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."