Ultrasonic tape measure being used to measure a wall. This device sends and recieves ultrasound. When pointed at a surface or object the returning signal is used to calculate its distance from the device. It has a laser pointer to help target the device. In this picture the laser beam has been digitally enhanced | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / De Schwanberg, Victor |
Bildgröße: | 6720 px × 4480 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |