Features Pressure gauges. They are available with 63 or 100 mm diameter dial with bar and PSI. The 1000 bar gauges are glycerine filled while the 1600, 3000, 4000 bar are dry. The G106L pressure gauge has a 1/4” NPT screw connection for direct insertion on the left side of the pump head. The model G10 exists also in the double scale version, bar and kN, to be used up to 700 bar, and differenciated for cylinders with hollow piston (G10F##) and for cylinders with normal piston (G10S##). Gauge blocks. Manufactured in steel, they are available in five versions to suit the gauge diameter and distance from the equipment.