The sort of same information is available in the status window bottom left corner, but shows how far off the origin axis you've pulled. The show CVs displays the amount moved away from the vertex original position.
Now it's up to you of course but I don't see the need for this information at all. If you need accuracy for technical modeling it's much faster and more accurate to snap to the grid, or existing verts already in place. Set up the grid to a scale that matches your needs.
This way you don't have to move the verts and try to roughly match the previous values. Far too slow and tedious not to mention slippery trying to get the exact value.
Another handy for micro movement is alt+arrowkeys to move a vertex or a group of vertecis in small increments.
PS: I'm no guru and far from technical. if exact values is what you need I hope someone who also uses that kind of workflow can better help you with this.
Last edited by AlphaFlyte; 05-06-2007 at 10:37 PM.