LT-8R 8x Professional Quality Double Lens Metal Linen tester with Glass measuring Reticle and fixed focus 3/4” 8x magnification lens. Measuring reticle with 1MM increments and 20MM long scale for precision measurements.Used for measuring, checking linens, gem cutting and inspecting, and printers and graphic artists. Carrying case included. Glass reticle requires this model must be handled with gentle care.