[pmmunro]

Leon,

Thanks for your helpful and interesting comments. Please continue to digress, it adds interest by giving an insight into your considerable experience.

Simon,

To quantify what Julie m and Lucien have written, on voltage ranges, the pointer on your meter always shows a proportion of movement full scale current, where the movement fsd current is the reciprocal of the "sensitivity" in ohms per volt. From the ranges quoted, its seems you are using a Model 8 Mk V, 6 or 7 Avometer.

The Model 8 Mk 7, for example, has a sensitivity of 2000 ohms per volt on the 30 V (AC) and above ranges, so the full scale current is 0.5 mA and 2%, 3.33% 6.66% of that when indicating 20V on the 1000, 600 and 300 V ranges respectively or 10, 16.7 and 33.3 microamps.

Interesting things these analogue multimeters. When you know what they're saying, they don't lie.

PMM

PMM