For accurate reading of your swimming pool filter pump's water pressure, Poolmaster’s Pressure Pool Filter Pressure Gauge is easy to read and install. Choose from a bottom-mounted or back-mounted style. Available in 1/4-inch thread fitting. Poolmaster's Maintenance Collection consists of the essential products for pool and spa maintenance. Items include skimmers and rakes, vacuums and hoses, water treatment tools, brushes and poles, accessories and replacement parts made in various styles, sizes, and quality materials. Items from the Maintenance Collection are constructed with durable materials designed to keep your pool sparkling.