TECHNICAL INDICATORS: 1.Model: LGSY-2.5, LGSY-4, LGSY-6 2.Measurement Range (MPa): -0.1~0.25; -0.1~0.4; -0.1~0.6 3.Accuracy: ±0.02%; 0.05% 4.Work Medium: Fresh pressurized air or nitrogen air in bottle 5.Regular Weights: One -0.01MPa weight, four -.002MPa weight Two 0.005MPa weight, two 0.01MPa weight Three 0.02 MPa weight, three 0.05MPa weight 6.Size: 560mm×410MM×550mm