NV6109 Ultrasonic Measurement Lab is a very useful training system for studying the various parameters of ultrasonic wave, like velocity and distance measurement. With the help of this setup, we can determine the velocity of ultrasonic wave in liquid with a high degree of accuracy. NV6109 consists of two parts – one is training board and other is liquid cell. The training board contains Ultrasonic sensors, used for distance measurement and object detection.