Processing good, solid thing, a good idea of modular design for quick removal of the magnifying glass itself. But the magnifying glass fogged unfortunately sometimes the use, and the base plate for the microscope could be generally thinner in construction. This is mounted on a enclosed Allen, keeps well, but you always have the Allen CLOSE, da ne great hub to tighten would have been better. The attachment of the magnifying glass on a screw (red) is also quite frikelig in my Mark III just outside the attachment limit, as the small bar at the magnifying glass is unnecessarily short. The idea was good, but not quite convinced.
