avo: MK4 (MK IV); Multiminor

ID: 266495
This article refers to the model: Multiminor Mk 4 (AVO Ltd.; London)

? avo: MK4 (MK IV); Multiminor 
07.Oct.11 15:12
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John Sykes (GB)
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John Sykes

I have recently aquired an AVO Multiminor Mk4 which may be a later version than the one illustrated. It has a different movement (not distinguishable without opening the meter), and the rear cover is plastic, not metal.  It's also in excellent cosmetic condition. Should this information be uploaded as a seperate entry as a possible later variant, or added as supplementary to the exising entry?  The latter would require  some detailed explanation.  

 

John

 

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AVO Variations 
08.Oct.11 14:11
53 from 3704

Michael Watterson (IRL)
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There are a huge number of AVO variations.

Each regular Model + Mk combination of regular AVO meter has it's own model page. I think it's strange it should be different from a another Multiminor without change of Model and Mk as AVO not averse to creation of new Model + Mk for a small variation of dial label.

I have the Model 9 MkIV, which isn't listed here. The Model 8 MkIV is essentially the same, but other slightly different Model8 and Model9 of same Mk version have different pages.

Did you email the Model Moderator(s)?

Maybe the listed Model/MK of the different one already listed is wrong, or your meter movement was replaced (this is where the Model and MK on regular AVO is shown), or your rear cover was replaced (or both) and in reality the model/Mk you have is not actually the Multiminor you think it is.

 

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AVO variants 
08.Oct.11 19:04
74 from 3704

John Sykes (GB)
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Count of Thanks: 7
John Sykes

Michael:

I can e-mail you everything I know about my model, plus extracts from the 1966 AVO service manual for the Mk 4, and you can make up your own mind regarding this "variant".  It is of course possible that AVO have repaired this sample, fitting perhaps the movement from a Mk 5?, and for some reason deciding to replace the rear half of the case, but it seems a little unlikley they would tool up 'specially to service an obscolete model?  I can tell you that the new movement is mechanically "adapted"  or interfaced to the main meter chassis (which holds the scale etc) using a dedicated "matching-black" bakelite block.  Again, this may be a feature of the Mk 5 contruction, but I don't have service information for the later meter.

 

John

 

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AVO Service 
08.Oct.11 19:16
78 from 3704

Michael Watterson (IRL)
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AVO was renowned even for re-calibration & repair of even WWII models up to 70s or 80s, I guess until Thorn/Megger took them over.

I'm no expert on AVO stuff, but they did repair even very old models of AVOmeter.

 

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