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    Half-line

    Conversions to other units

    1 half-line | 0.001667 atm (atmospheres)
 (unit officially deprecated)
 | 1 Russian half-line
 | 168.9 Pa (pascals)
 | 0.1689 kPa (kilopascals)
 | 0.02449 psi (pounds-force per square inch)
 | 1.267 mmHg (millimeters of mercury)
 | 0.04987 inHg (inches of mercury)
 | 1.689 mbar (millibars)
 | 0.01689 dbar (decibars)

    Conversions from other units

    1 atm | 600 half-lines
1 Russian half-line | 0.9996 half-lines
1 Pa | 0.005922 half-lines
1 kPa | 5.922 half-lines
1 psi | 40.83 half-lines
1 mmHg | 0.7895 half-lines
1 inHg | 20.05 half-lines
1 mbar | 0.5922 half-lines
1 dbar | 59.22 half-lines

    Physical quantity

    pressure

    Unit system

    (not in a named unit system)

    Basic unit dimensions

    [mass] [length]^(-1) [time]^(-2)

    Corresponding quantities for 1 half-line

    Depth of water d giving gauge pressure p_e from p_e = ρ_(H_2O)gh:
 | 0.68 inches
 | 17 mm (millimeters)
 | (assuming conventional water density ≈ 1000 kg/m^3)

    Standard Atmosphere altitude:
 | 27 miles
 | 44 km (kilometers)
 | (based on 1976 US Standard Atmosphere)

    Comparisons for 1 half-line as pressure

     ≈ (0.02 to 0.1) × approximate explosion peak overpressure needed to break a glass window ( 1000 to 10000 Pa )

     ≈ (0.1 to 0.2) × atmospheric pressure on the surface of Mars ( 0.0066 to 0.011 bar )

     ≈ 0.28 × partial vapor pressure at the triple point of water ( 611.7 Pa )

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