1.Diameter:  1.5",2",2.5",3",4",6"
2.Connection: 
R radial,  bottom  connection;
A  axial,  center  back  male  connection;
3.Range:0-100psi,......0-6000psi
4.Scale:  psi,  bar,  Mpa,  Kpa,  kg/cm2,
5.Inlet  thread:1/8",1/4",3/8",1/2",  BSP,  BSPT,  NPT