This is a Berkely Bio-Engineering model VC-2 suction device.  This unit is in good cosmetic and operating condition.  Gauge indicates that maximum pressure is 76 cm of Hg.  This device is used, and does show some signs of use, such as minor scrapes and scratches, and perhaps some chassis color variations.  Any significant damage is noted and photographed.  This unit also has some small rust spots.  Money back guarantee if dissatisfied upon receipt.