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Amazon.com: CGOLDENWALL Handheld Ultrasonic Flowmeter Clamp on Flow Meter Portable Liquid Flow Meter with S1+M2 Transducers for Copper/PVC Pipe DN15-700mm 1/2-28" ((Old or New Panel)) : Industrial & Scientific
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TDS-100H-M2 Transit-Time Handheld Digital Ultrasonic Flow Meter for DN50-700mm Pipe Size: Science Lab Handheld Digital Microscopes: Amazon.com: Industrial & Scientific
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