Feature:1. It is used to observe the paper and printing outlets of banknotes, tickets, stamps, coins and cards in finance, taxation, philately and electronic industries.2. It can be used in the jewelry industry to observe the internal structure of gemstones, the molecular arrangement of cross section, and the analysis and identification of ore samples and cultural relics.3. Used in printing industry, it can be used for finishing plate, color correction and dot, edge extension observation, accurate measurement of screen mesh size, dot size, overprint error, etc.4. It can be used in textile industry to observe and analyze fabric fiber and warp and weft density.5. It can be used in electronic industry to observe the stripe and quality of copper platinum PCB.6. It can be used in the observation and research of germs and insects in agriculture, forestry, grain and other departments.7. It can also be used for animal and plant specimens, identification and analysis of evidence, scientific experimental research, etc.Specification:Material: LED lamp tube, shell made of imported ABS plastic, optical acrylic lensMagnifying glass size: 54x35x24 mm, pull out size: 82x35x24mmMultiple: factory printed 30 times, actual 10 times, effective diameter: 21 mmBattery: button battery 1130 (not included)Usage: pull out the lens, the LED light is on, push the LED light to turn off.Note:Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank youPlease allow 1-3cm measuring deviation due to manual measurement.Included:1 X Jewelry Magnifier