This digital manometer measures gauge/differential pressure from -55H2O to +55H2O(5psi). It features 11 selectable units of measure: in H2O￡? pis￡? bar￡? mbar￡? Kpa￡? inHg￡? mmHg￡? ozin2￡? ftH2O￡? kgcm￡? additional features include data hold and auto power off disabled￡?careful use of this meter will provide years of reliable service.? <br><br><strong>Features:</strong> <br>11 selectable units of measure. <br>Max/min/average￡? and with a relative time. <br>Large LCD back light dual display￡? easy to read. <br>Zeroing￡? offset￡? and data compensation. <br>Low battery display and automatic shutdown. <br>Data hold and error code. <br><br><strong>Specifications:</strong> <br>Main Color: Beige <br>Display: Dual LCD <br>Function ? ? ? ?Range ? ? ? ? ?Resolution? <br>InH2O ? ? ? ? ??à138.3 ? ? ? ? 0.01?? ? ? ? ? ? <br>Ozin2 ? ? ? ? ??à80?? ? ? ? ?0.01 <br>Psi?? ? ? ? ? ?à5.000 ? ? ? ? 0.001 <br>FtH?O ? ? ? ? ??à11.53 ? ? ? ? 0.001 <br>Mbar ? ? ? ? ? ?à344.7 ? ? ? ? 0.1 <br>cmH?O ? ? ? ? ??à351.5 ? ? ? ? 0.1 <br>Kpa?? ? ? ? ? ?à34.47 ? ? ? ? 0.01?? ? <br>Kgcm2 ? ? ? ? ??à0.351 ? ? ? ? 0.001 <br>inHg ? ? ? ? ? ?à1.018 ? ? ? ? 0.001 <br>Bar?? ? ? ? ? ?à 0.344 ? ? ? ?0.001 <br>mmHg ? ? ? ? ? ?à258.5 ? ? ? ? 0.1?? ? ?? ? ?? ?? <br>Measure Range: ?à34.47KPa <br>Accuracy: ?à0.3% FSO(25??C) <br>Repeatability: ?à0.2%(Max?à0.5%FSO) <br>Linearity/Hysteresis: ?à0.29%FSO <br>Maximum Pressure: 20psi <br>Response Time: 0.5s typical <br>Low Range Indicator: Err.1 <br>Under Range Indicator: Err.2 <br>Operating Temperature: 0??50 ??C(32??122 ??F) <br>Storage Temperature: -10??60 ??C(14??140 ??F) <br>Power: 1 * 9V battery (NOT included) <br>Item Size: Approx. 16.2 * 5.5 * 3.3cm / 6.4 * 2.2 * 1.3in <br>Item Weight: Approx. 126.9g / 4.5oz <br>Package Size: Approx. 25.7 * 14.2 * 6.4cm / 10.1 * 5.6 * 2.5in <br>Package Weight: Approx. 216g / 7.6oz <br><br><strong>Package List:</strong> <br>1 * Pressure Gauge <br>1 * User Manual? <br>1 * Protection Bag <br>2 * Soft Hose <br>1 * Copper Pipe