Date: Wed Dec 10 14:40:26 2008

Author: Bill Alexander

Subject: Re: Electrometer


We finally retired our old General Radio electrometers. After more
than 40 years of faithful operation they pretty well gave up. They
are a genuine beauty inside in terms of mechanical design and
fabrication. We now use Keithley electrometers for demonstration,
model 610, that we bought on eBay for less than $100. I believe they
were around $5000 20 or more years ago. So far, it works fine.


>Does anyone have suggestions regarding the purchase of an
>electrometer for demonstration purposes?
>Tom G. Johnson
> Dept. of Physics and Astronomy
> Washington State University
> Pullman, WA 99164-2814
>phone: (509) 335-5097
> email:
> Web:


Bill Alexander
Physics Dept.
Humboldt State University
(707) 826-3212