Thanks, rstofer, for your help.
- A simple rotary switch is going to add influences to the reading... The significance of those influences will depend on the accuracy required. That's why I thought some negating circuitry might be required. I guess it could be handled with just math... Determine the resistance the switching system adds and then account for it. But, that's not very efficient.
- You make a v-e-r-y good point about having to be careful about what mode you are in, when you change the switch. I had not thought of that one and it is extremely important, as you said.
- Well the only reason I ask the question, of course, is because I have a present need. For my current project, I could readily use six... It is a LT3081 PSU... So, Supply volts and amps, Output volts and amps, Iset voltage and Mon voltage. The two input DMMs could be read once and moved off, but my Bench PSUs don't have very nice/accurate/digits accuracy and I am curious as to what is going on on that side...
- Good suggestion on the cheap meters. I will look at the links.
I appreciate your interest, input and opinions. Thank you. I will continue to think on it.