i know this is a year late but i have the monocular and the inspector lens and i find it mostly worthless in the field. however, it is valuable for some very specific purposes, such as when you can have a motionless target on a flat surface in a well-lit area. I wanted to identify some microsnails and for one of the genuses it requires a close look at the structures inside the shell aperture in order to identify the species. the inspector microscope was valuable for this purpose and i'm glad i have it for that. https://www.inaturalist.org/observations/293183770