The 2-1/2" Liquid Filled Compound Gauge is designed for precise measurement with a range of 30"Hg to 30 psi. Featuring a back mount and a 1/4" NPT connection, this gauge is perfect for applications where space is limited. The liquid filling protects against shock and vibration, ensuring accurate readings in various environments. Ideal for use in HVAC, pneumatic systems, and other industrial applications, this gauge is built with high-quality materials for durability and reliability, making it a trusted choice for professionals.