The Watts Fluidair 0-5"HG Viton Nonrelieving Serv is a specialized vacuum gauge designed for accurate measurement in low-pressure applications. With a measurement range of 0 to 5 inches of mercury, this gauge is ideal for laboratory and industrial settings. Its Viton construction provides excellent chemical resistance and durability, ensuring long-lasting performance. The non-relieving design makes it suitable for applications where pressure relief is not necessary. This gauge meets industry standards for safety and accuracy, making it a reliable choice for professionals.