SCH-7 7x Professional Measuring Magnifier Comparator with focus and measuring reticle. High precision ground corrected adjustable focus glass lens provides a dynamic flat field image, comes with metric linear scale and makes measurements up to 15mm in 0.1mm increments. Widely used for precision measuring, blueprinting parts, analyzing fractures, quality control, fingerprints, security papers, & print analysis. Comes in padded storage case to store loupe and keep optics protected.