I'd like to align one object to the nodes of another object. In the screenshot below, I'd like to horizontally align the text below to the axis marker that's represented by the two selected nodes above.
I could duplicate the axis, select all nodes that don't belong to that small vertical line, delete them, do the alignment and then delete the temporary object. But since I didn't even find a way to invert the selection of nodes, this process is very laborious and error-prone. So any better way to do this is much appreciated!