Product Description Quick Specifications: Magnification: 0. 8X to 5X Zoom ratio: 6. 2: 1 Working distance: 117mm WF eyepiece: WF10X/22mmJSZ-6 Zoom Stereo Microscope The JSZ-6 is specially ideal choice for research workers, This new higher resolution offers excellent quality, This model with a 1: 6. 7 zoom ratio has 115mmlong working distance, which provide sharper and stronger image. It is fully matched for the semi-conductor and chip inspection. The standard magnification is 0. 8x-50x, . The total magnification is 4x-200xThe JSZ-6 stereomicroscope series is specifically intended for research workers. The Model JSZ-6 series offer excellent quality. The working distance is 117mm allowing easy handing of sample. The standard magnification is 0. 8x to 50x (zoom ratio 6. 7: 1).Optional Attachment:Auxiliary Objectives: 0. 5X (WD: 211mm), 2X (WD: 43. 5mm) Wide Field Eyepiece: WF15X/16mm, WF20X/12. 5mm, Quick Specifications: Magnification: 0. 8X to 5X Zoom ratio: 6. 2: 1 Working distance: 117mm WF eyepiece: WF10X/22mmAuxiliary Objective Working Distance (mm) Eyepiece WF10X/22 WF15X/16 WF20X/12. 5 Total Magnification Visual Field (MM) Total Magnification Visual Field (MM) Total Magnification Visual Field (MM) 115 8x-50x 27. 5-4. 4 12x-75x 20. 0-3. 2 16x-100x 15. 6-2. 5 0. 5x 211 4x-25x 55. 0-8. 8 6x-37. 5x 40. 0-6. 4 8x-50x 31. 2-5. 0 2x 43. 5 16x-100x 13. 8-2. 2 24x-150x 10. 0-1. 6 32x-200 x 7. 8-1. 3