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# tangentialPressure

The tangential pressure on the device that generated this event.

```
var tangentialPressure: Float { get }
```

## Discussion

The property’s value can range from -1.0 to 1.0. Tangential pressure is also known as barrel pressure. Only some pointing devices support tangential pressure. This method is valid for mouse events with subtype `NSTabletPointEventSubtype` and for `NSTabletPoint` events.

## See Also

[`pressure`](/documentation/AppKit/NSEvent/pressure)

A normalized value that indicates the degree of pressure applied to an appropriate input device.


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