Type Method

millimeterOfMercuryUnit

Returns a HealthKit unit for measuring pressure in millimeters of mercury.

Declaration

+ (instancetype)millimeterOfMercuryUnit;

Return Value

A HealthKit unit for measuring pressure in millimeters of mercury.

Discussion

One millimeter of mercury is the pressure needed to raise a column of mercury by 1 millimeter. Even through it is not an SI unit, the millimeter of mercury unit is used in many scientific fields. In HealthKit, it is commonly used to measure blood pressure.

See Also

Constructing Pressure Units

+ pascalUnit

Returns a HealthKit unit for measuring pressure in pascals.

+ pascalUnitWithMetricPrefix:

Returns a HealthKit unit for measuring pressure, using pascal units with the provided prefix.

+ centimeterOfWaterUnit

Returns a HealthKit unit for measuring pressure in centimeters of water.

+ atmosphereUnit

Returns a HealthKit unit for measuring pressure in atmospheres.

+ decibelAWeightedSoundPressureLevelUnit

Returns a HealthKit unit for measuring the difference between the local pressure and the ambient atmospheric pressure caused by sound.