On Thu, 26 Jan 2006 05:50:05 +0000, (DoN. Nichols) wrote:


Huh? Switch off the power to adjust them? What are you doing,
adjusting by gripping and rotating the brush carrier? Any one you find
should accept an insulated shaft (if genuine General Radio Variac), or
with a built-in metal shaft (with other brands, which are called
Powerstat or other similar names. "Variac" is not truly a generic term,
but rather a brand name. I don't know what happened to General Radio
who made them, but that is who used to make them.

snip



I suspect that Christopher's ones have come out of a panel at some time and
don't have any enclosure at all!


Mark Rand
RTFM