The whole world is moving towards recycling or green campus; such an initiative is focused here. In order to make use of the recycled raw materials completely without any wastage, certain measurements are necessary. Such measurement is the paper or board thickness has been proposed in this paper. The paper thickness measurement plays a vital role in order to minimize the pulp wastage and increase the production rate. The measurement technique utilized for paper thickness measurement is the ultrasonic method. The ultrasonic sensor-based paper thickness measurement helps in getting optimized results of maximum utility and minimal wastage. The thickness measurement indicator is designed to monitor the paper or card board thickness in an effective way. The improves the productivity of the paper production plant.