Blender question

No.497355 ViewReplyOriginalReport
Something I always wondered...

(without using the mirror modifier)
Let's say at some part of a mesh I want to move some vertices to the side and want to do the same on the other side.
I want them to be moved the same distance, so that both manipulations are pretty much symmetrical.

Is there some quick snapping that recognizes the other side or do I have to use the grid to snap to if I wanted to make it accurately?