Dino-Lite capillaroscopes are used to assist in early diagnosis of various kinds of diseases by checking up the capillary vessel of a finger. Now a physician can examine the capillary with magnified clarity and digitally record the image for diagnostic and other purposes. While 500x models are available, many users find that the 200x model, AF4115-N2UT is the best for simple results and ease-of-use.