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  "title" : "Measurement Unit Attributes"
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# Measurement Unit Attributes

Values that indicate the unit values of a ruler or layout area.

## Discussion

Use these values with the [`units`](/documentation/AppKit/NSAccessibility-swift.struct/Attribute/units), [`horizontalUnits`](/documentation/AppKit/NSAccessibility-swift.struct/Attribute/horizontalUnits), and [`verticalUnits`](/documentation/AppKit/NSAccessibility-swift.struct/Attribute/verticalUnits) properties.

## Topics

### Constants

[`static let inches: NSAccessibility.RulerUnitValue`](/documentation/AppKit/NSAccessibility-swift.struct/RulerUnitValue/inches)

The units are inches.

[`static let centimeters: NSAccessibility.RulerUnitValue`](/documentation/AppKit/NSAccessibility-swift.struct/RulerUnitValue/centimeters)

The units are centimeters.

[`static let points: NSAccessibility.RulerUnitValue`](/documentation/AppKit/NSAccessibility-swift.struct/RulerUnitValue/points)

The units are points.

[`static let picas: NSAccessibility.RulerUnitValue`](/documentation/AppKit/NSAccessibility-swift.struct/RulerUnitValue/picas)

The units are picas.

[`static let unknown: NSAccessibility.RulerUnitValue`](/documentation/AppKit/NSAccessibility-swift.struct/RulerUnitValue/unknown)

The units are unknown.


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