Thank you for the photos Cathy. Mine is similar in function but it used a leather strap instead of a cable.
i pieced together the old dry rotted one and wrote down the following dimensions.
I can get some photos of those sections of my cabinet, but it may be a few days as I've had bronchitis this past week. And hubby says I'm to rest...
Thanks for the kind offer Jon, but I think 21.5" would be too short.