Analog Manometer Pressure Range -0.20 to 2.6 in wc 0 to 16 in wc For Tubing Diameter 0.187 in Maximum Operating Pressure 50 psi Maximum Pressure 2.6 in wc 16 in wc Minimum Pressure -0.2 in wc 0 in wc Scale Units in wc Series 1227 Manometer Type U-Inclined Primary Graduations 1 in wc Housing Material Plastic Includes Gas Pressure Kit No Fluid Color Red Includes 0.75 Ounces Red Gage Oil 4 1/2 ft x 3/8 in Tubing for Pressure Source Connection (2) Magnetic Clips Carrying Case