Nixie tubes - fantastic! I used to own a Hewlett Packard frequency counter that ran 7 Nixies: it could count to one whole MegaHertz. I bought it for a pound from a ham radio rally in 1984 and had to test every bloody transistor, 17 of them on each of the driver boards. Needless to say I started from the wrong end and it was the third from last transistor that was faulty
Funny how things come back to you
All done with the new part for Gary.
Only had a thin slitting saw so the head slot is not as big as the old part which I presume has a slot to accommodate a coin.
@mgarym i'll pop these back in the post to you tomorrow.