Dwyer Liquid Filled Wall Mount Manometer, Mark II 25, 0-3" w.c, 3% Accuracy 0-3"WC, Red oil, 0.826 sp. gr. Size:0-3"WC, Red oil, 0.826 sp. gr. Operation: easy to attach

Operation: easy to attach

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Dwyer Liquid Filled Wall Mount Manometer, Mark II 25, 0-3" w.c, 3% Accuracy 0-3"WC, Red oil, 0.826 sp. gr. Size:0-3"WC, Red oil, 0.826 sp. gr. Operation: easy to attachDwyer Liquid Filled Wall Mount Manometer, Mark II 25, 0 3" w. c, 3% Accuracy The Dwyer Mark II 25 inclined differential manometer with red gauge fluid has a 0 to 3 inH2O measuring range, built in zero level and molded plastic case for monitoring air velocity and air filter performance, and taking pressure measurements above and below atmospheric pressure. Red gauge fluid is freeze proof and has lower evaporation rate for use in cold environments, and