Reply To: Magnification Home › Forums › Nemeth Code for Math and Science › Magnification › Reply To: Magnification March 23, 2011 at 2:34 pm #20768 dworthingParticipant If you use the letter X following 200 it will appear that there is an unknown factor multiplied times the 200. (200 times X) To convey the true meaning of the expression the multiplication cross should be used.