A
tube on the inside of one spiral fits inside the other and is twisted
to lock the two parts together. Depending which of the three slots
the second part of the reel twist into determines the width of the
reel and the film that is to be processed.
These
reels have locating notch that is to be matched up to fit the reels
together before they are twisted. If the reels are fitted together
without locating these notches correctly the reel can jam and become
impossible to twist apart. |