Log IT-Ranger-VS-Vision-Logit-D100091i-Ultrasonic-Ranger-Sensor-Ultrasonic-Position-&-Speed-of-Sound-Sensor-for-Physics-&-Maths-Allows-Time-distance-Measurement-Dynamics-etc-the-Sensor-can-also-Measure-the-Ultrasonic-Echo-Time-for-Speed-of-Sound-Measurements-Measures-the-Real-Time-Dynamic-Position-&-Movement-of-Objects-in-the-Range-of-200mm-to-5m Logit-Ranger