You searched for: “magniscope
magniscope (s) (noun), magniscopes (pl)
A portable, hand-held microscope: A magniscope is especially helpful for classroom or outdoor use and some are advertised as having a battery-powered light source, a one-hand operation of focus and light with a removable base and equipment storage compartment, and it can be used as a monocular, loupe, or simple magnifier.