[volt-nuts] The "averaging reference"

[Dr. David Kirkby (Kirkby Microwave Ltd)]

On 19 Dec 2014 19:30, "Jan Fredriksson" <jan at 41hz.com> wrote:
>
> It's no coincidence that virtually all 8.5 digit DMMs use the LTZ1000.
> It's in a class of it's own.

What do the 8.5 digit meters use if they don't use the LTZ1000?

Dave.