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Dwyer 477AV

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477AV-7 477AV-7

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Dwyer 477AV-7 - Handheld Digital Manometer, 0-100.00 psi, air velocity/flow modes.
  • Type (Manometer): Digital
  • Max Pressure: N/A
  • Type of Input: N/A
  • Engineering Units (HVAC): hPa, inch Hg, kPa, mbar, mmHg, psi
  • Min/Max/Hold: Yes
  • Pressure and Leak Test Option: N/A

Your Price: $232.95

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477AV-3 477AV-3

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Dwyer 477AV-3 - Handheld Digital Manometer, 0-200" wc, Air Velocity/Flow Modes
  • Type (Manometer): Digital
  • Max Pressure: N/A
  • Type of Input: N/A
  • Engineering Units (HVAC): hPa, inch Hg, kPa, mbar, mmHg, psi
  • Min/Max/Hold: Yes
  • Pressure and Leak Test Option: N/A

Your Price: $232.95

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477AV-0 477AV-0

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Dwyer 477AV-0 - Handheld Digital Manometer, 0-10" wc, Air Velocity/Flow Modes
  • Type (Manometer): Digital
  • Max Pressure: N/A
  • Type of Input: N/A
  • Engineering Units (HVAC): hPa, inch Hg, kPa, mbar, mmHg, psi
  • Min/Max/Hold: Yes
  • Pressure and Leak Test Option: N/A

Your Price: $359.85

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477AV-00 477AV-00

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Dwyer 477AV-00 - Handheld Digital Manometer, 0-4" wc, Air Velocity/Flow Modes
  • Type (Manometer): Digital
  • Max Pressure: N/A
  • Type of Input: N/A
  • Engineering Units (HVAC): hPa, inch Hg, kPa, mbar, mmHg, psi
  • Min/Max/Hold: Yes
  • Pressure and Leak Test Option: N/A

Your Price: $359.85

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477AV-000 477AV-000

(1 Review)

Dwyer 477AV-000 - Handheld Digital Manometer, 0-1" wc, Air Velocity/Flow Modes
  • Type (Manometer): Digital
  • Max Pressure: N/A
  • Type of Input: N/A
  • Engineering Units (HVAC): hPa, inch Hg, kPa, mbar, mmHg, psi
  • Min/Max/Hold: Yes
  • Pressure and Leak Test Option: N/A

Your Price: $381.70

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477AV-1 477AV-1

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Dwyer 477AV-1 - Handheld Digital Manometer, 0-20" wc, Air Velocity/Flow Modes
  • Type (Manometer): Digital
  • Max Pressure: N/A
  • Type of Input: N/A
  • Engineering Units (HVAC): hPa, inch Hg, kPa, mbar, mmHg, psi
  • Min/Max/Hold: Yes
  • Pressure and Leak Test Option: N/A

Your Price: $359.85

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477AV-2 477AV-2

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Dwyer 477AV-2 - Handheld Digital Manometer, 0-40" wc, Air Velocity/Flow Modes
  • Type (Manometer): Digital
  • Max Pressure: N/A
  • Type of Input: N/A
  • Engineering Units (HVAC): hPa, inch Hg, kPa, mbar, mmHg, psi
  • Min/Max/Hold: Yes
  • Pressure and Leak Test Option: N/A

Your Price: $232.95

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477AV-3-BK 477AV-3-BK

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Dwyer 477AV-3-BK - Handheld Digital Manometer with Boot Kit
  • Type (Manometer): Digital
  • Max Pressure: N/A
  • Type of Input: N/A
  • Engineering Units (HVAC): hPa, inch Hg, kPa, mbar, mmHg, psi
  • Min/Max/Hold: Yes
  • Pressure and Leak Test Option: N/A

Your Price: $247.00

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477AV-4 477AV-4

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Dwyer 477AV-4 - Handheld Digital Manometer, 0-10 psi, Air Velocity/Flow Modes
  • Type (Manometer): Digital
  • Max Pressure: N/A
  • Type of Input: N/A
  • Engineering Units (HVAC): hPa, inch Hg, kPa, mbar, mmHg, psi
  • Min/Max/Hold: Yes
  • Pressure and Leak Test Option: N/A

Your Price: $232.95

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In Stock:
  • Free shipping over $99 - Code: FREESHIP
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477AV-5 477AV-5

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Dwyer 477AV-5 - Handheld Digital Manometer, 0-20 psi, Air Velocity/Flow Modes
  • Type (Manometer): Digital
  • Max Pressure: N/A
  • Type of Input: N/A
  • Engineering Units (HVAC): hPa, inch Hg, kPa, mbar, mmHg, psi
  • Min/Max/Hold: Yes
  • Pressure and Leak Test Option: N/A

Your Price: $232.95

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477AV-6 477AV-6

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Dwyer 477AV-6 - Handheld Digital Manometer, 0-30 psi, Air Velocity/Flow Modes
  • Type (Manometer): Digital
  • Max Pressure: N/A
  • Type of Input: N/A
  • Engineering Units (HVAC): hPa, inch Hg, kPa, mbar, mmHg, psi
  • Min/Max/Hold: Yes
  • Pressure and Leak Test Option: N/A

Your Price: $232.95

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  • Free shipping over $99 - Code: FREESHIP
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477AV-8 477AV-8

(1 Review)

Dwyer 477AV-8 - Handheld Digital Manometer, 0-150 psi, Air Velocity/Flow Modes
  • Type (Manometer): Digital
  • Max Pressure: N/A
  • Type of Input: N/A
  • Engineering Units (HVAC): hPa, inch Hg, kPa, mbar, mmHg, psi
  • Min/Max/Hold: Yes
  • Pressure and Leak Test Option: N/A

Your Price: $232.95

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In Stock:
  • Free shipping over $99 - Code: FREESHIP
  • View Payment Options
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Dwyer 477AV


The Dwyer 477AV Handheld Digital Manometers are available with pressure, flow, and velocity measurements along with a number of other features.  They display negative, positive, and differential pressure. For pressure, flow, and velocity there are selectable English and metric units, as seen in the model chart below. The built-in air velocity and volumetric flow calculations conserve time associated with cumbersome manual calculations. Additionally, up to 40 readings can be saved—perfect for HVAC technicians making Pitot tube traverses of airflow readings across a duct. The accuracy that the 477AV Series provides is critical to maintenance personnel and technicians who require a highly accurate standard to check their instrumentation or equipment, to ensure proper performance.
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