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With its easy-to-read display
Detector tubes safely allow users to perform field screening and tests for the presence of hazardous and toxic gases
ammonium (ammonia)
it provides accurate and comprehensive data to help engineers
military-grade connectors
Dwyer Instruments 477 Dust Monitors - Area Size With its easy-to-read displayThe Dwyer Instruments 477 is a highly accurate digital manometer designed for precise measurements in the field of HVAC, plumbing, and pneumatic systems. With a range of up to 20 inH2O and user selectable engineering units, this portable instrument provides accurate and reliable readings for a wide range of applications. Built with a durable and ergonomic design, the Dwyer Instruments 477 0 20" W. C. reads positive, negative, and differential