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AUTOOL Digital Manometer, Dual-Port Manometer Gas Pressure Tester, Handheld HVAC Manometer, 12 Selectable Units Differential Pressure Gauge, Large LCD Display with Backlight : : Industrial & Scientific

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CMTOOL Manometer Gas Pressure Tester Digital Manometer HVAC Gauge Manometer Kit ±20.68 KPa Automotive Manometer, Engine Oil Quality Tester Oil Transmittance Tester Automobile Lubricating Oil Detector : Industrial & Scientific

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WonVon ±2.999 psi Digital Handheld Manometer ± 83 wc HVAC Gas Pressure Tester 12 Selectable Units Differential Dual Port Pressure Pressure Gauge

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REED Instruments R3030 Digital Manometer, Gauge/Differential, 30psi: Industrial Pressure Gauges: : Industrial & Scientific

B. Long press for more than 2 seconds to enter the P1 and P2 dual-channel differential pressure mode. In DIF mode, press and hold for more than 2

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Exceed the positive pressure range display Err0, Exceed the negative pressure range display Err1. The 4.2CM×4.8CM large display screen supports LCD

Dual Port Digital Differential Manometer ±100.68Kpa Gas Pressure Tester 12 Units