Usage Tips:1. Accurate Measurement: The 4T 0.1-1L/MIN Acrylic Variable Area Flow Meter is designed for precision, enabling you to measure gas flow rates with confidence and reliability. 2. Construction: Made from high-quality acrylic, this flow meter ensures durability while maintaining clear visibility of the fluid levels, making monitoring easy and effective. 3. Adjustable Panel Mount Design: With its adjustable panel mount feature, the 4T Gas Rotameter allows for flexible installation options, accommodating various setups and environments. 4. Versatile Application: Ideal for controlling air flow rates in diverse settings, this Air Flow Rate Controller is perfect for laboratories, industrial applications, and HVAC systems. 5. User-Friendly Operation: The intuitive design of the 4T 0.1-1L/MIN Acrylic Variable Area Flow Meter makes it easy to read and operate, ensuring streamlined usage for both professionals and hobbyists alike Color:As shown Material:Acrylic Package Contents: 1 x Air Flow Rate Controller 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 real thing. The measurement allowed error is +/- 1-3cm.