... customized size4. Measurement range: 0~400bar, 0~6,000psi (dual scale)5. Coupling: Bottom or back connection6. Thread Coupling: M20x1,5 ... , Certificate of Utility Model Patent11. Dial plate: Single or dual scale (psi, kpa, mpa, bar, kg/cm) available12. Measuring medium: non ... and 50 bar the red light on switch lighted. LPG level sensors