I have just bought through Ebay an old AVO Model 7X Panclimatic analogue multimeter. It certainly brought back memories as I was an engineer at sea years ago and it was standard equipment on all British and Australian Merchant ships.
What I'm after are the batteries. For the two lower ohms range it uses a standard 1.5v "C" battery. But for the 1 Meg range it needs 2 x (special sized) 4.5 volt batteries. These two batteries appear to supply separately and the relevant connections are not parallelled or "seriesed" up, so a 9volt battery can't be used.
If these specific 4.5V are no longer available I can probably rig up 3 x AA batteries and make the 4.5V. Rod Nissen.
Combustion & Engineering Diagnostics
nissenr@iprimus.com.au
What I'm after are the batteries. For the two lower ohms range it uses a standard 1.5v "C" battery. But for the 1 Meg range it needs 2 x (special sized) 4.5 volt batteries. These two batteries appear to supply separately and the relevant connections are not parallelled or "seriesed" up, so a 9volt battery can't be used.
If these specific 4.5V are no longer available I can probably rig up 3 x AA batteries and make the 4.5V. Rod Nissen.
Combustion & Engineering Diagnostics
nissenr@iprimus.com.au