dual scale diaphragm pressure gauge

size:2",2.5",3",3.5",4",4.5",and 6" pressure range:-6...0 mbar up to 0...400 bar socket:heavy-duty 316 ss or coper alloy ,LM or CBM capsule material:316 ss phosphor brass connection way:back connection,bottom connection ,and clamp fixing,falaned fixing thread,hose etc. connection thread:NPT,BSP,BSPT,PT,ZG,and other special specification available tube/capsule material: 316 ss or copper alloy case: 304 ss bezel: 304 ss window(lens):polycarbonate,and safety glass lens available dial plate:single and dual scale(psi,kpa,mpa,bar,kg/cm2)available accuracy:+/- 3/2/3%(ASME B40.1 Grade B);+/-1%(ASME B40.1 Grade A) Bracket: U-clamp or front flange availabe Ambient temperature:-25 to 55 degree centigrade;relative humidity below 80%