Check the listing for details. proteus flow meter. Condition: Used. Listed at 150.00 USD. This Proteus flow meter is a top-quality device designed to help you accurately measure the flow of fluid in your system. With its durable construction and reliable performance, this flow meter is perfect for use in a variety of industrial settings. The brand name Proteus is synonymous with quality and innovation, and this device is no exception. Featuring a unit quantity of 4, this flow meter is ideal for use in multiple locations within your system. Its precise measurements ensure that you can accurately monitor the flow of fluid at all times, allowing you to optimize your system for maximum efficiency. Whether you're looking for a reliable flow meter for your industrial needs or simply want to upgrade your current device, this Proteus flow meter is the perfect choice.