Differential Manometer UEI Dual input +/- 60" w
HVACTool.net Product Description
Features: Dual input differential manometer, Measure in inches water gauge or mBar, Min/Max capture, Data Hold, Back-lit display, 0.01" wg resolution below 9.99", Range is +/- 60" wg, or +/-150 mBar, One year limited warranty.