Jenaval - drawing of ligth path

[Klaus Yde]

I have for some time tried to find a cut drawing of a jenaval, where the light path from the bulb to the oculars can be seen. I have a complete set of manuals, but nowhere in these are such a drawing. I havent been able to get a prospect at a decent price (I wont pay 25€ at eBay for a prospect). I have searched the internet - but with no luck.

Can someone in the forum help me? or give me an address?

Thanks

Klaus Yde