Avo 7 variations

Hello, i think that it is possible to find hese Avo 7 variations.

Not sure if all exist, specially the ones with bakelite case an PF connectors from the 70´s


-Avo 7 (MK1) aluminium case Metal screw and PF connectors
-Avo 7 (MK1) aluminium case Metal screw without PF connectors
-Avo 7 (MK1) aluminium case Bakelite screw and PF connectors
-Avo 7 (MK1) aluminium case Bakelite screw without PF connectors
-Avo 7 MK2 aluminium case with PF connectors
-Avo 7 MK2 aluminium case without PF connectors
-Avo 7 MK2 bakelite case with PF connectors
-Avo 7 MK2 bakelite case without PF connectors
-Avo 7X PANCLIMATIC
-Avo 7 in BRAILLE
-Avo 7 British army marked ZD00021


Can anyone confirm the existence of all this models and perhaps if there are more not listed.

Thanks

Aitor Eneko

[The Philpott]

The change in Z screw from metal to bakelite was generally around 1942, the peg on the rear of the metal screw was glass- presumably to avoid electrical continuity from the screwdriver to the movement. These screws were interchangeable so it is not possible to know whether an early meter started out with the Z screw that it now has.

From what i have seen some early Model 7's were made in a shadow factory, and the parts availability at that site may have changed from month to month.

Dave

Thanks, and what about the model of the 70’s? Does exist Avo 7mk2 with bakelite case and with or without Pf conectors in that era?