Right, I've had another look. It appears to be set up for 35mm at the moment - 50mm lens and 35mm neg holder. I tried the 105mm (actually a Wray Supar 4.25 inch) lens and the universal neg holder (which has movable masks from 6x9 down to 35mm) and the illumination doesn't cover the whole area. Presumably therefore the condensers are set up for 35mm as well.
The condenser actually comprises two semi convex lenses so it may well be that by fitting them some other way they will cover the larger formats. There was a posting on APUG recently from someone who has the instruction manual for Gnome enlargers and can probably help. I'm afraid my knowledge of condenser enlargers is something close to nothing; all I can say is that it's potentially a MF enlarger when set up that way. Someone who knows about condensers can perhaps chime in here.
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