Vacuum Gauges, Compound Pressure Gauges, Pressure gauges, Test Gauges, Electric Contact Gauges, Hydraulic Tonnage Gauges, Freon Gauges, Ammonia Pressure Gauges. Sizes Available: 40mm, 50mm, 63mm, 80mm, 100mm, 150mm, 250mm Mounting types:Bottom Connection Direct Mounting, Back connection Direct Mounting, Bottom connection Surface Mounting, Back Connection Panel Mounting. Pressure Ranges available:Vacuum (0-760mm of HG/ 0-30in of HG) ,1kg up to 1000kg/cm2, 1, 2, 3, 4, and up to 6Tons Products Ammonia Pressure Gauge Commercial Utility Pressure Gauge Compound Pressure Gauge Test Gauge