6X LED Linen tester with fixed focus 6X magnification lens. Has a durable metal frame and dual LED. It has a 30mm square measuring field with both 1/8"and 1mm increments for those precision measurements. Used for measuring, checking linens, gem cutting and inspecting, CSI fingerprint and fluid examination, printers, graphic artists and is suitable for many other applications. The handy counter makes counting simple. Complete with protective pouch.