Re: AVO Multimeter survey
Nice Father’s Day present! I like the Mk II version of the Model 7 and Model 40, finding them probably the easiest to operate with the deep selector knobs that are ergonomically good to grip.
The Model 40 has a basic sensitivity of just 167 ohms per volt, but don’t dismiss them completely as ‘no good for electronics’ as I recall at least one 1930s vintage radio service sheet which quoted voltage readings taken with such a low-sensitivity instrument. Used on the higher voltage ranges, loading is tolerable for many measurement points, and even if the pointer deflection is very small, it can still be read with a good degree of accuracy. However the inability to measure high resistance values is, admittedly, something of a drawback...
A strong penknife blade can sometimes persuade the case to separate from the front panel.
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Phil
Optimist [n]: One who is not in possession of the full facts
Last edited by Phil G4SPZ; 20th Jun 2022 at 10:38 pm.
Reason: Addendum
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