Add a slider control and a border control to the content of the StackPanel, and add a canvas to the border control.

   
      

<Window x:Class="ScaleInCustomSystem"
  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  Title="Scale In Custom System" Height="310" Width="260">
  <StackPanel Height="280" Width="250">
    <Border BorderBrush="Black" BorderThickness="1" Height="200"
      Width="200" Margin="20">
      <Canvas Height="200" Width="200">
        <Canvas.RenderTransform>
          <TransformGroup>
            <ScaleTransform ScaleY="-1" />
            <TranslateTransform Y="200" />
          </TransformGroup>
        </Canvas.RenderTransform>

      </Canvas>
    </Border>
    <Slider Name="slider" Minimum="0" Maximum="3" Value="1"
      TickPlacement="BottomRight" TickFrequency="0.2"
      IsSnapToTickEnabled="True" />
  </StackPanel>
</Window>