I own an old,old variac transformer,or something practically the same
thing.It is sitting in a wooden box I made to store it in.I don''t
remember the paticular brand name of it though,Variac? or whatever.I
think it dates back to the 1940's or 1950's.I bought it at a thrift
store about ten years ago.When I brought it home,I plugged it in (the
electric cord on it is still in good condition) and I connected my Fluke
digital multimeter to it and I turned the voltage control knob.It seemed
to me to be working perfectly.I only paid two dollars for it.If somebody
can find some pictures of those old vairable voltage transformers on the
internet,there be a picture of one just like the one I own.It isn't for
sale or trade though,I don't get rid of my old things I want to keep.
cuhulin