This one has me baffled. Pretty dumb but...I have some 6"X4"X1/2"thick plates that need to be squared up(6" dimension is true/parallel). Usually I use a square on the vise bed to square small plates up. How do you square them up if there isn't room to put a square on the vise? A DI moved up and down with the quill? I tried putting the square on the top of the jaw and eyeballing the plate but there isn't enough of the square in contact with the plate to be sure. Only other thing I can think of is to measure how far off it is with the square and add that number of shims under the end. Am I even close here? I used to do them on the table with an angle plate before I got my big vise. It was easy to check them for square then. Has to be an easy way to do this in the vise but I'm missing it. Thanks.