So this is the beginning of my preservation project for these trailers. First I have to scan my reels, I decided to use my nikon film scanner (coolscan IV ED, LS-40).

I disassembled my scanner to see how it will be possible to scan my reels with it. That black plastic thing going to the right is where the films goes through, it continues to the rear end of the case:

So I just have to make a hole in the scanner's case to let the film out. You can see the marking where I'll have to make the hole:

That way i will be able to have each part of the reel on both sides of the scanner. What is already scanned on the back, what have to be scanned on the front.

I'll post images of the setup once i have finished meddling with the scanner.