delta 20 beta 4 usb 3 5v dermatoscope heineDermatoscope Delta 20 Beta 4 USB 3. 5v Combines precision optics with the ability to switch between polarized and non polarized illumination. Contact dermatoscopy with immersion fluids is still possible. This allows for adaptation of the examination to each type of lesion and provides the best possible diagnosis. General Features: The high quality achromatic optical system provides perfectly sharp, high resolution images. The focusing system allows