Review on AmScope H2510 Handheld Stand Measuring Microscope: 20x/50x/100x Magnification, 17mm Field of View, Includes Pen Light - Reliable Precision for Microscopic Analysis by Drew Gengler

An excellent mini optical microscope that I would call a field microscope. Very similar to many old 19th century brass field microscopes from before WWI or then, but long enough that it requires standard 23mm diameter eyepieces and DIN threaded objectives. I bought a triple lens version of the H2510 that gives 20x, 50x and 100x magnification but adds a 15x eyepiece to give 30x, 75x and 150x magnification achieve. The 5x eyepiece reduces the magnification to 10x, 25x and 50x. Add a 4mm lens for different magnifications to make the device versatile enough. If you need more lighting, some LED buttons need to be adjusted, much brighter than a traditional incandescent bulb. As a hobby screwdriver, however, I have the advantage when it comes to adjusting accessories. The manual is bad in that it doesn't mention some items. Not to mention that the tool needed to loosen the eyepiece locking screw is a .035" or .9mm allen wrench, a relatively rare size not found in most kits. Damage to lenses due to use of the focus limit setting.