Scales entities by a given factor towards a given center.
Usage
Select the entities you want to scale.
Launch this tool.
Set the center of the scaling with the mouse or enter a coordinate in the command line.
The scale dialog is displayed where you can enter the scale factor. If you want to scale with two different factors in X and Y direction, uncheck the button for proportional scaling: You can then enter two different scaling factors for X and Y. If you want to scale the selection by mouse, check the mouse cursor button:
Click "OK".
If you have previously chosen to scale the selection by mouse, you now have to specify a reference point and a target point for the scaling operation.