https://www.teachersource.com/product/Illuminated-field-microscope
Illuminated Field Microscope, Handheld Magnification: Educational Innovations, Inc.
Achieve perfect microscopic images in the field. No larger than an eyeglass case and with a total weight of less than four ounces, this instrument redefines...
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https://www.wzfukai.com/Handheld-reading-magnifier-led-lights-25x4x25x-triple-magnification-lens-110MM-p.html
Handheld reading magnifier led lights 2.5x/4x/25x triple magnification lens 110MM