# scrollDeltaPerTick

> The magnitude of WheelEvent.delta that corresponds to exactly one tick of the scroll wheel.

## Definition

* **Type:** Field
* **Namespace:** [UnityEngine.UIElements](/engine/6000.3/script-reference/unityengine/uielements.md)
* **Assembly:** UnityEngine.UIElementsModule

```csharp
public const float scrollDeltaPerTick = 3
```

### Remarks

UIToolkit's scroll factor is the same as IMGUI's scroll factor both in Editor and Runtime.