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Author Message   Pfrey Tinkerer Username: Pfrey Post Number: 1 Registered: 08-2008 Rating: N/A Votes: 0 Posted on Tuesday, August 05, 2008 - 10:47 am:    Hi, One of the screws holding the focusing ring to the helical ring on my Peckham Wray 4x5 aerial /press camera is missing..Does anyone know what standard Wray used for the screws? Metric, SAE or BA? I took the screw to the local Fastenal, but their plastic index is worn and didn't really give me confidence...one size screw seem to fit an SAE index, and the other seemed metric..possible during the short WWII production, but I kind of doubt it. There's a place called British Fasteners that I can send a sample to, but before I went to the trouble, I figured I'd ask this forum. thanks