National boilers, radiators, and specialties: catalog no. 26 (1920)
National Radiator Company · National Radiator Company · leaf 68
8.20 Novus Altitude Gauges This gauge is used in connec-tion with hot water heaters andregisters the height of the columnof water in the system. Theblack hand is connected with theworking parts of the gauge anddenotes on the dial the height ofthe water in the system. Afterthe system is filled to… … 69 N A T I OIN A L HEATING SPECIALTIES Novus Floor and Ceiling Plates
