The MKS Instruments Baratron MODEL 122AA-00010BB is a high-quality vacuum gauge used for measuring pressure in units of Torr. Made in the United States by MKS Instruments, a reputable brand in the industry, this device offers precise and reliable measurements for various industrial and research applications. Ideal for accurate control of vacuum levels in a wide range of settings, the Baratron MODEL 122AA-00010BB is a valuable tool for ensuring optimal performance and quality in vacuum systems.