Avometer Model 40 Special (7.5mA FSD)
This is a well used and very original looking Model 40 (s/n -18664-747) but that's where the normality stops- the scale plate is compressed (or expanded!?) to 150/600 from the normal 120/480. The ohms range is truncated to suit, thus does not extend to FSD.
Red paint is used to demarcate the 25% over-read allowed for on this meter, and there is also an error- '100' is painted in as '10'.
'20' has been overpainted to a high standard where paint has flaked from the scale plate.
The instruction plate is the stock article. Rotten batteries from the early 1970's were in the battery compartments, with a clever adaptor made to allow fitment of an SP2. The lid of the battery compartment has a '4' digit infilled in white which looks professionally done.
High voltage DC ranges dead but 12v range working (usual o/c winding/s probably) No temperature compensation, the scale plate is marked 20C as expected. As to whether the movement is standard but the swamp has been altered- or whether the movement is a one-off- i am not yet sure!
Very odd.
Dave
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