MMLU-2x-4x LED fixed focus measuring magnifier with a large linen tester style reticle with 1.65" x 1.85" inch rectangular measuring field. Folding handle design and easy to read increments allows for quick measuring and examination of thread counts, latent fingerprints, surface inspection, has dual 1/16" and .5MM increments side measuring reticles. Durable clear acrylic base construction and both 4 led and UV bulbs allow this magnifier to inspect currency security threads, check gemstone and mineral fluorescence, make critical inspection and measurements.