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Old 22nd May 2018, 2:15 pm   #1679
The Philpott
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Join Date: Aug 2016
Location: Colchester, Essex, UK.
Posts: 4,108
Default Re: AVO Multimeter survey

Probably a March 1936 meter then. An AA cell can be used, it's length can be increased (for example) by stacking three or four 5p pieces at the + end and it's girth increased by using a short bit of fuel or coolant hose.. slit from end to end if required.
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