This is the Unknown Winder.  Not sure who made it, or for what use.

This is a heavy metal sheet with 2 tracks, and 4 spring loaded Winders with cranks.  Each winder is 3 & 3/4 inches from the shaft to the top of the positioning knob.  They are currently adjusted for a 3-4.5 inch reel.  The Shaft is slightly larger than the standard Motion Picture reel shaft of 5/16 inch.  It is more like 1/2 inch diameter.  It has square ends that are about 5/16" square.  They are spring loaded.

No returns.

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TIP: Film reels should always be stored vertically - never horizontally as the weight of a stack of reels can break off edges of film that are sticking out.   In fact - you never want to stack reels of film horizontally - so buy a film rack for Vertical Storage - or build one out of 2x2" wood rails held about 6 inches apart.

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TIP: If you run into Vinegar Syndrome, there is a product discontinued decades ago that fixes it and it has been reintroduced.  A standard VITAFILM cleaning fixes most cases.  Tough cases might need putting the reel of film in the large half of a film can and soaking it.  Remember that Vinegar Syndrome is a film stock problem - not an emulsion problem.  VITAFILM works well and is available from eBay vendors.

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(C) 2017 Mike Martin