LT-4x 4x Professional Quality Metal Linen tester with fixed focus and a 1” 4x 12 diopter magnification lens. We were asked by a large ballistic fabric company to make a 4x linen tester and have decided to offer it for sale. The slightly lower 4x allows increased eye relief and easier quick ready and assessment. This 4x linen tester has an industry standard one inch square measuring field with both 1/8"and 1MM increments for those precision measurements. Used for measuring, checking fabrics, ballistic and traditional as well as all kinds of weaved fabrics & linens, as well as inspection of untraditional ballistic material surfaces, gem cutting and inspecting, CSI fingerprint and fluid examination, printers and graphic artists. Carrying case included.