Fangrui Product Details Easy-to-read Pressure Gauge. The Polycarbonate Flow Tube And Outer Cover Are Impact And Have Maximum Durability. The Flowmeter Adopts Back Pressure Compensation To Accurate Readings When There Is A Pipeline Limit. It Is Refined From High-quality Materials, Has A Compact Structure And Good Sealing. Metal Body, Stable Voltage Regulation, Firm And Reliable. Large Handle Switch, Non-slip Design, More Labor-saving. Applicable Gas: Measurement Range: 0-25mpa Rated Output Pressure: 0-25mpa Rated Flow Rate: 0-200m3/h Ambient Temperature: 0-30dial Diameter: 56mm Colour:photo Color Material:plastic + Metal The Color/appearance Of The Components Of The Product From Batch To Batch, But It Not Affect The Use; The Appearance Of The Product From Batch To Batch, But It Not Affect The Use Package Contents: 1 X Flow Meter Only The Above Package Content, Other Products Are Not Included. Note: Light Reflection And Different Displays May Cause The Color Of The Item In The Picture A Little Different From The Rea