Helps distinguish pigmented skin lesions such as basal cell carcinoma vs. malignant melanoma by providing the ability to magnify, illuminate and measure. Provides 10 times magnification and illumination for crisp, clear viewing. Reticle contact plate facilitates measurement and tracking of lesion growth. Fits any 3.5v Welch Allyn power source. Halogen illumination for true tissue colour and free reference guide available for patient education.