Blender 2.6: Move Mesh to X Coordinate of Another Mesh

Question

An example:

There are two planes A and B with the following median points:

    ( X | Y | Z )

M_A ( 3 | 2 | 2 )
M_B ( 6 | 1 | 1 )

Now I want to move the plane A on the X-axis to the X coordinate of the plane B (the Y and the Z coordinate of plane A should stay the same). That's the desired result:

M_A ( 6 | 2 | 2 )

My Question:

How can I move a mesh to the X position of another mesh (or to the X postition of the 3D cursor) without touching the Y and Z coordinates. - It's a bit like the Blender function called Snap, but what I want is just about X coordinate.

Thanks for your ideas (please comment if anything is unclear!).

Answer 1

You can constrain movement to an axis even when using the various snapping modes in Blender. 'g' to start a move, 'x' to constrain to the x axis, and hold down control to snap (change snapping modes in the popup menu next to the magnet on the toolbar).

Alternatively you can enter the coordinates directly in the object property panel.