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# ruleThickness

The thickness of the area where ruler hash marks and labels are drawn.

```
var ruleThickness: CGFloat { get set }
```

## Discussion

This value is the height of the ruler area for a horizontal ruler or the width of the ruler area for a vertical ruler. Rulers are by default 16.0 PostScript units thick. You should rarely need to change this layout attribute, but subclasses might do so to accommodate custom drawing.

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