Feature 1It is suitable for measuring the vacuum degree of the milking machine. 2Measurable vacuum range 0.10Mpa, high accuracy, widely used in aquaculture. 3Using highquality stainless steel metal material, it is durable and corrosionresistant. 4It can help users better observe the pressure inside the milking machine. 5Adopts G1/4 male thread connection and can be easily installed on the milking machine. Item Type: Milking Vacuum Gauge Material: Stainless Steel+Copper Measuring Range: -0.1-0Mpa Product Size: Approx. 6x7x3cm / 2.4x2.8x1.2in Thread Diameter: G1/4 Male Thread Weight: Approx. 85g / 3oz Product Use: Measure the vacuum degree of a small milking machine, install it on the milking machine and use it Package List 1 x Milking Vacuum Gauge Note 1.Please allow 0‑1 inch error due to manual measurement. Thanks for your understanding. 2.Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.