Mechanical tally counter. This device is used to count people,animals,vehicles and other items that pass by a location or are held at a location for a short period. Each time the metal tab at the top is pressed,the counter advances by one | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library |
Bildgröße: | 4346 px × 4346 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |