Heath CM-1
 

Many years ago I converted a CM-1 capacitance meter to solid state
using a 555 osc in place of the tube circuit. I no longer have the
meter or the schematic I developed. I was wondering if anyone else had
done this hoping I would not have to reinvent the wheel again. Knowing
the osc frequecies for the various ranges whould be a huge help at
giving me a starting point. Otherwise I will probably have to borrow a
function generator.

Jimmie