Ultrasonic distance meters

Ultrasonic distance meter

— devices designed to measure distances using ultrasound — on the principle of an echo sounder. Externally, such devices may resemble laser rangefinders — usually they are even equipped with built-in lasers, but in this case, the light mark is used only to aim the device at the target. The use of ultrasound makes it possible to work in heavily polluted air, as well as to measure some parameters that are inaccessible to a laser, such as temperature. On the other hand, the measurement accuracy is less high