Features: 1) Type: a) Fluid gauge b) Air gauge 2) Diameter of faceplate: 1.5 - 4" 3) Material: stainless steel, steel Different sizes, materials, structures, and precision are available according to clients requirements. Now we recommend two hot products, one is DIAPHRAGM PRESSURE GAUGE,size:YE100,YE150.pius:0-40kpa;Minus:-40~0Kpa.P&M:-20~+20Kpa. the other is Air Gauge YN801,Size:1.5"-4" Please visit our website: for more details.