Bear with me guys - I'm off sick with severe gastritis. It's agony to sit at this desk, but I'm bored of lying in bed watching Frasier!!
I'm afraid I don't know much about the history of The Dizer. It's made by M.C. Dizer, London, Ltd. It obviously looks a LOT like an Air-Way, but what's interesting about it are not the similarities between the two, but the differences.
As far as I can tell, they don't actually share a single componant! Every piece is slightly different to my Air-Way Fleetwood Special.
As you can see here, the casing to the fan/motor unit is 'backwards'...
[ATTACH=full]15330[/ATTACH]