[High-quality]Made of durable Metal+ABS housing, small and lightweight. (The jeweller magnifier you received is complete and a whole part that does not need to be installed.) [Reticle scale]Removable reticle scale, convenient to measure the actual size of objects. Lens can be adjusted. [Focus Length]Adjustable height (focal length) from 51 mm to 63 mm according to your different requirements. [Detail]10x magnification, Perfect for accurate observation of details. 4 AG9 batteries (battery not included). With 8 LED lights to illuminate the observation field. [Application]Perfect tool for accurate observation of circuit boards, watches, laboratory use, plants, minerals, insects, jewellery, stamps, at home and in the office etc. Model: Cross scale board / Complex scale board For jewelers, watchmakers, geologists, coin and stamp collectors, photographers and hobbyists. Material:Metal+ABS colour:Black Package Contents: 1 * LED Scale Loupe Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.