On Mon, 30 Jun 2008 09:29:33 -0400, E Z Peaces
wrote:

Smaug Ichorfang wrote:
The more I look at 1338, I wonder if it is indeed aa metal-foil
electroscope. Typically these have very thin pieces of metal foil
suspended from a central conductor. The center piece in this looks way too
thick to be an electroscope. Does the center piece move; can it pivot from
side to side? Are the two terminals on the sides adjustable? Is it
possible this is a tilt switch of some sort?



How about a line frequency monitor from a time when automated equipment
to keep a generator on frequency was not reliable.

SNIP

Naw. Prior to the 40's, flyball governors were used to do that.