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Author Message   Rick_oleson Tinkerer Username: Rick_oleson Post Number: 330 Registered: 07-2006 Rating: N/A Votes: 0 Posted on Saturday, July 28, 2007 - 06:40 am:    I looked through my notes, I'm afraid I don't have screen details on the FM but I do have them for the Nikkormat FT3 which may be similar. In that there are 2 transparent pieces (a groundglass and a field lens), a flat metal frame and a larger metal frame. The groundglass goes on the bottom, then the flat metal frame, then the field lens, then the metal retaining frame goes over the curved top face of the field lens. All this goes in from the top, after which you reinstall the prism and then reinstall the top cover. I don't know what the metal bar would be, maybe a retaining clip for the prism? I assume that if you have the screen out of the FM, then the top cover is removed and you have a handful of loose parts in addition to those you mentioned (prism, retaining clips and springs, wind lever, rewind knob, etc? It's been a very long time since I worked on an FM but my recollection is that the screen has to come out the top and requires a fair bit of disassembly to get there.