Scale tab of the Transform dialog box

This tab lets you resize selected objects with precision. You can also leave a trail of copies of an object while scaling it.

Horizontal and Vertical	Defines the percentage change in the current horizontal and/ or vertical size of an object. The current size is 100%. A number below 100% decreases the object size, and a number above 100% increases the size. The horizontal and vertical sizes are the same unless you deselect the Proportional Scale option.
Proportional Scale	If selected, sets the Vertical percentage to the same value you specify in Horizontal, and vice versa. If not selected, lets you set Horizontal and Vertical values separately.
Origin	Lets you select the handle or point on the object at which the transform originates. The default is the object's pivot point (usually at the center of the object's bounding box).
Copies	Type the number of copies to make while transforming an object. Each copy is scaled using the values from the previous copy. For example, if the first copy is scaled 10% larger, the second copy will be 10% larger than the first, the third copy will be 10% larger than the second, and so on. To scaled only the original object, set the number of copies to 0.
Group Copies	Automatically groups all the copies after a transform, but not the original object.
Details	Shows a list of remembered transformation settings. This feature lets you apply multiple transforms to an object. Add - Adds the current transformation settings to the list. Modify - Sets the selected remembered transform to the current settings. Choose the remembered transform you want to change, make the changes you want, and then click Modify. The new settings appear in the list. Delete - Removes the current transform from the list. Empty - Removes all remembered transforms. Wireframe Preview - Shows a wireframe preview of the transformation as you enter values.