These models have the widest field of view available in fingerprint magnifiers. Ideal for latent print comparison and impression evidence examination. Easy focusing with a convenient thumbscrew locking adjustment. Frame constructed of solid aluminum. 3½X magnification from quality optics provide sharp, clear focusing of the entire viewing area such as palm prints and shoe impressions. Henry Classification Discs available for tenprint classification. #3108 weight 11.5 oz. #3109 weight 14.4 oz.