"Tony Bryer" wrote in message
...

Back in my childhood (early 1960's) now and again all the valves
would be removed from our radio and taken down to the local shop
which had a Mullard valve tester: they'd plug in the valve and a
punched bakelite card which had the settings for the valve in
question. Amazingly Google produced a picture of same:

http://www.thevalvepage.com/testeq/m...test/vtest.htm


This uk.d-i-yer actually has one of them in the attic. They often come up
for sale on eBay if you get overtaken by nostalgia !

P.s. The cards are actually paxolin rather than bakelite. Now not a lot of
people know that.... :-)