Figure 6. Gauge length for testing of sensor

From

Distance Measurement via Using of Ultrasonic Sensor

Michal Kelemen, Ivan Virgala, Tatiana Kelemenová, Ľubica Miková, Peter Frankovský, Tomáš Lipták, Milan Lörinc

Journal of Automation and Control. 2015, 3(3), 71-74 doi:10.12691/automation-3-3-6