Here is a unique tool that takes the mystery out of analyzing press problems.
With a 'closer look' you can easily determine if a plate is taking ink properly, or if your blanket is glazed, if a sheet needs more impression pressure, or if a clean ink roller is glazed with ink pigment or sensitized with paper sizing.
If you want to learn more about the interaction of the physical componets of the printing process, this handy microscope is a great press room tool for starters.
Comes with two AA batteries and ready for use.