AllPoints 721134 Electronic Manometer

AllPoints 721134 Electronic Manometer, It Replaces Your Fragile And Messy U-tubes. Simply Turn The, Instrument On By Pressing The Power Button And Press And, Hold The Zero Button For Approx. 4 Seconds. Connect The, Provided Tubing And You Are Immediately Receiving, Continuous Pressure Measurement From -20″ To 20″ Water, Gauge With Resolution As Good As 0.05″., This Affordable Instrument Provides A Large Lcd Display And, Comes Complete With A Protective Rubber Boot With Integral, Magnet One 9v Battery And Tubing With Fitting.