A steel mill has a production set up where metal sheets are rolled for desired thickness as they emerge from the production sequence. It is a continuous real time production and measurements have to be made on-line. Suggest a sensor that can do the job. The final output should be electrical. How will you set up a data acquisition system? As a designer, show step by step how you will conduct data acquisition and control the thickness. The answer should include sketches and laboratory steps you go-through while you conduct this experiment.