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DWYER, Inclined Vertical, 0 to 3 in wc, Analog Manometer - 2T650|MARK II 25 - Grainger
Series Mark II Molded Plastic Manometers | Dwyer Instruments
Amazon.com: Dwyer Series Mark II 25 Molded Plastic Manometer, Inclined-Vertical Scale, 0 to 3 inH2O Measuring Range, Red Gauge Fluid, 0.826 sp. gr. (Limited Edition) : Industrial & Scientific