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  "identifier" : "/documentation/AppKit/NSScrollView/horizontalRulerView",
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# horizontalRulerView

The scroll view’s horizontal ruler view.

```
var horizontalRulerView: NSRulerView? { get set }
```

## Discussion

The value of this property is `nil` when the scroll view has no horizontal ruler view.

If the scroll view is set to display a horizontal ruler view and doesn’t yet have one, this property creates an instance of the ruler view class set using the class method `setRulerViewClass(_:)`. You can use this property to override the default ruler class set using the class method `setRulerViewClass(_:)`.

Display of rulers is controlled using the [`rulersVisible`](/documentation/AppKit/NSScrollView/rulersVisible) property.

---

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