1) Liquid Type: Glycerine or Silicone; 2) Diameter: 1.5", 2", 2.5", 2.75", 3", 3.5", 4", 4.5", 5.5", 6", 6.5", 7.5", 8"; 3) Case: 304, 316 stainless steel; 4) Window: Polycarbonate; 5) Range: -30-0psi; 0-15psi, ...0~15, 000psi; 6) Scale: Psi, bar, Mpa, Kpa, KG / cm2, Hg; 7) Accuracy Class: 3% -2% -3%, 1.6%, 1%; 8) Thread: 1 / 8", 1 / 4", 3 / 8", 1 / 2", 5 / 8", 7 / 8" NPT; 9) BSP, BSPT or PT or ZG