Pick some device/machine that interests you, it doesn’t have to be from Clive.  It should be something that you’re interested in learning more about. Describe the device, provide any links you might have for it, and ask questions about what you’d like to know.  Jerry is familiar with a wide range of devices from many years in industry testing, repairing, building, and designing them.  For simple questions Jerry might have a quick answer, for harder questions he will help you to research to find the answer.