To say there have been many advancements in the field of microscopy since the development of the first compound microscope by Zaccharias Jansen in the late 16th century is an understatement. Jansen and his father, Dutch spectacle makers, built the first microscope by using three draw tubes with lenses inserted into the ends of the flanking tubes. They discovered a much larger image than expected; much larger than simple magnifying glass provided. The very first compound microscopes only magnified images between 6x – 9x. Microscopes of today can magnify images to the nanometer.