Very Small Pressure Difference (< 5 Mm Water Column) Can Be Most Conveniently Measured By A/An --------- Manometer?

Inclined Tube Mercury

U-Tube Mercury

Inclined Tube Water

U-Tube Water

Very Small Pressure Difference (< 5 Mm Water Column) Can Be Most Conveniently Measured By A/An --------- Manometer?

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