X-axis and Electric Outlet...

[oren32]

Hi,
I inserted an electric outlet into my drawing. I know it starts 60cm from the "East" wall. So if the end point of the X-axis is 700, then it should be 640 - and that is what I put there. Now, if I make the width of it 20 cm (There are actually few electric outlets there in my own room, but I want to use only long one in the drawing), then it stretches to both sides - I can see it in the 3D view. But the X-axis of it stays 640. So actually, the X-axis represent the location of the middle of electric outlet and not the most "east" location of it (Its beginning).

My question: Is there a way to make the X-axis represent the most "east" location of the electric outlet, so no matter what width I decide to make it, I can easily make sure it will start X-cm (60 in my case) from the most "east" wall?

Thanks
Oren