Made of durable metal and ABS housing, small and lightweight. The jeweler's magnifier is complete and arrives as a single unit that does not require assembly. Removable reticle scale allows for convenient measurement of object dimensions. Lens can be adjusted for clarity. Adjustable focal length from 51 mm to 63 mm to suit various viewing needs. 10x magnification provides clear and accurate detail observation. Equipped with 8 LED lights to illuminate the viewing area. Requires 4 AG9 batteries (batteries not included). Ideal for inspecting circuit boards, watches, laboratory samples, plants, minerals, insects, jewelry, stamps, and other detailed work at home or in the office. Model: Complex scale board Suitable for jewelers, watchmakers, geologists, coin and stamp collectors, photographers, and hobbyists. Material: Metal and ABS Color: Black Package Contents: 1 x LED scale loupe Note: Light exposure and display settings may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3 cm.