My husband has been trying to teach our son a little bit about what he does at work. He is a mechanic at a local factory. Today he was explaining all about how a differential pressure transmitter works. He was explaining how the measure the pressure for various things, like liquids or gases. I don’t know how much our son really understood, he’s only seven years old, but he still listened to every word. I think that it’s good that the two of them spend some time together. They might go and take a look around the factory together this weekend.