UEi EM720SPKIT Static pressure manometer kit includes EM720 manometer, stepped T fitting (2), static pressure probes (2), pressure tubing with brass fittings (2), step connector with 3.15-inch tubing (2), 60-inch pressure tube, batteries, soft case, manualMeasures pressure ±80 in WCTemperature compensation protects sensor accuracy from ambient temperature sourcesHOLD MIN/MAX/AVGAmbient temperature measurement Static Pressure Hi-Res Differential Manometer Kit Check gas pressures in accordance with equipment manufacturers' specifications, Measure draft, gas supply, manifold or burner pressures, Dual input offers users the ability to measure pressure drops across heat exchangers, cooling coils, supply, and return. Check gas pressures in accordance with equipment manufacturers' specifications. Measure draft, gas supply, manifold or burner pressures. Dual input offers users the ability to measure pressure drops across heat exchangers, cooling coils, supply, and return registers and filters. ? Static Pressure Manometer KitIncludes EM720 ManometerStepped T Fitting (2)Static Pressure Probe (2)Pressure Tubing w/ Brass Fitting (2)Step connector w/ 3.