This meter with a 25-0-25uA movement is ex-equipment. It is an 'RS MR42A' and it's resistance was spec'd at 1250ohm. It works fine over its range to its spec.
The dial face (panel cut-out) = 13mm by 43.3; the two lugs, set back by 16mm, take the overall width to 57.3. The coil barrel extends 20mm below the lower face and is 36mm wide by 26 deep.
