Jon, I contacted Valcor Eng. Corp today regarding that shut off valve in the picture. They told me that particular shut off valve was meant for aircraft use, like the Micro Switch, and not for use on a car. They told me that they are also a division of Honeywell! It appears that some previous owner had a bunch of spare parts, some from aircraft, and was trying to create whatever that is out of them. Speed control might be as good a guess as any. This is about all I can do to try and identify the true use of these components. My previous suggestion might be something you may want to do. Display it and see who says anything about it, and what. It certainly is an oddity.