---
title: tangentialPressure
framework: appkit
role: symbol
role_heading: Instance Property
path: appkit/nsevent/tangentialpressure
---

# tangentialPressure

The tangential pressure on the device that generated this event.

## Declaration

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

## Discussion

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

### Related Documentation

- [pressure](appkit/nsevent/pressure.md)

### Getting tablet pointing information

- [absoluteX](appkit/nsevent/absolutex.md)
- [absoluteY](appkit/nsevent/absolutey.md)
- [absoluteZ](appkit/nsevent/absolutez.md)
- [buttonMask](appkit/nsevent/buttonmask-swift.property.md)
- [NSEvent.ButtonMask](appkit/nsevent/buttonmask-swift.struct.md)
- [rotation](appkit/nsevent/rotation.md)
- [tilt](appkit/nsevent/tilt.md)
- [vendorDefined](appkit/nsevent/vendordefined.md)