"Do Little Jr" wrote in message
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"Asimov" wrote in
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Rare VTVM's used a 100 Meg ohm input but the standard was 10 Meg.

Sorry Asimov, I find that questionable at best.
For even in 1950 - 60' any 'industrial workhorse' like the tube-type
HP 410B used 100 Meg ohms input as a standard input
It was only when the DVM came on the scene that most inputs
appeared to drop to 10 Meg Ohms.

It was a rare VTVM example that wasn't 11 Meg, 1 Meg in the DC probe.
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