The M2 is an excellent Fingerprint Magnifier that provides 4.5X magnification using a two-element glass optics system which provides great clarity with a minimum of distortion. The Magnifier's height adjustment knob allows for easy positioning of the optics. Constructed of precision-machined aluminum with an optical black anodized finish. The base is designed for use with the PF series of classification discs and features spring-loaded ball bearings allowing full 360 degree rotation of the classification discs.