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This Rothenberg U-Gauge Manometer is manufactured from a durable plastic casing with a clearly marked scale in millibar. The fresh and new design incorporates magnetic strips for securing to boiler cabinets while in use and adjustable velcro strips for vertical hanging during use.Features & Benefits: Rothenberger 12 inch Plastic U Gauge Manometer, Manufactured from a durable plastic casing with a clearly marked scale in millibar, Fresh and new design incorporates magnetic strips for securing to boiler cabinets while in use, Adjustable velcro strips for vertical hanging during use, Rubber Hose not supplied. Rothenberger 12 inch Plastic U Gauge Manometer 67060