Times have changed and now microscopes can be replaced by similar devices, thanks to the emergence of the matrix with high resolution. Company Extech Instruments offers a small device that is called electronic minimikroskopom. It weighs 70 grams without regard to the three-AAA batteries and equipped with a 1.8-inch display, and already two megabytes internal memory. Given the price of 300 dollars is cheap trick, especially given the image 320x240 pixels, which can be downloaded to your computer via USB-cable. The microscope provides optical approximation from 7h to 27h, an enhanced 4-fold digitally. Although, I think, for these purposes do not need any heavy optics, and just 5-6-megapixel matrix. Samples of images which can be done with the help of a microscope, there are more.
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