[The Philpott]

Properly unmolested- and it's been kept in a house by the looks of it..

I'm not surprised it works....and i'm also not surprised that the Q pot is glitching! if there's a precious metal insert in the end of the prod make sure it hasn't worked loose. (It's only happened to me once...but it WAS on a Model 7)

I was interested to note that the Model 7 doesn't perform particularly well if you, for example, measure a DC current of 500mA (pushed by 6v) on the 1A range. Granted you would be using a high pointer deflection which is inadvisable, but it will under-read by 7% which is somewhat worse than a Model 9, Model D and even Type E that i subjected to the same test. Reverting to the high range on each meter gave good results.

Using AC of 12v to push a similar current, all the meters concerned (apart from the Type E which failed to qualify for AC) actually preferred a high pointer deflection to a low one. They don't tell you this in the manual..

Dave