Especially in technical drawings, often you need many different objects to have the same size. It's very tiresome to copy/paste the numbers in the W/H fields. So:
A number of commands are added to easily scale selected objects to match the size of the object(s) previously copied to the clipboard. They are all in the Paste Size submenu in Edit menu:
* Paste Size scales the whole selection to match the size of the clipboard object(s).
* Paste Width scales the whole selection horizontally so that it matches the width of the clipboard object(s).
* Paste Height scales the whole selection vertically so that it matches the height of the clipboard object(s).
* Paste Size Separately scales each selected object separately so that it matches the size of the clipboard object(s).
-- bulia byak Inkscape. Draw Freely. http://www.inkscape.org