The MIDWEST CONTROL VSL45-030 is a precision 4-1/2" dry vacuum gauge that measures vacuum levels from 0 to 30"Hg. Featuring a lower mount and a 1/4" NPT connection, this gauge is designed for easy integration into various systems. Its durable construction ensures accurate readings and long-lasting performance in demanding environments. Ideal for HVAC, refrigeration, and laboratory applications, this gauge provides essential data for monitoring vacuum conditions. The clear dial and easy-to-read markings enhance usability, making it a reliable tool for professionals in the field.