To move back the centre origin point to were the object is Hi Please can you tell me how to move the 3D cursor and centre origin point back to were the object selected is please? 
I am selecting the landing feet and the X,Y and Z axis arrow is all the way to the right hand side please can you tell me how to fix it so it is situated relatively close to the object in this case the landing feet.

Thanks

Simon
Select the object in question.

Tab to enter edit mode.

A to select all (You may have to hit it twice)

Shift + S >> U To set the 3D Cursor to the average locational center of your selection.

Tab To exit edit mode.

Ctrl + Shift + Alt + C >> T To set the Origin to the new location of the 3D cursor.