It comes usually in a box with a number of lengths for transfering stitches onto from the knitting machine, as well as parts that block movement of stiches on the needlebed, while applying the stitch transfer movements. They usually only fit standard gauge machines.
There were clear instructions on the correct side up to use the bar to begin transfer and then on turning to replace stitches back on needles. Bumps down to start transfer off the needlebed and bumps up to replace back onto the needlebed so the open needles catch the stitch from within the hollow.
Before the talk we had show and tell.
This crocodile scarf is a great design idea