Portescap Vibrograf CE 150

European Watch Clock and Jewellery Fair 1985 BF 802
The new Vibrograf CE 150 liquid-free water-resistance checking system works on the overpressure principle. After being measured and interpreted electronically, the results are displayed on two readouts (good/bad). The sensor is automatically positioned on the watch. Since no liquid is used potential damage to the watch is avoided entirely. (PORTESCAP Vibrograf CE 150)