Desk Microscope/Kaisi KS-7050 B3 Microscope/"*7x-50x*Continuous Zooming*Binocular model*Working distance:100mm*With B3 design baseplate" Kaisi KS-7050-B3 0.7-50X HD Binocular Microscopes Features: Used in education, lab research, biology, metallurgy, engineering, chemistry, manufacturing, and in the medical, forensic science, and veterinary industries. The professional stereo zoom microscope has a pair of 10X super-widefield high-eyepoint eyepieces, a 0.7X-4.5X zoom objective, a 0.5X Barlow lens, and a single-arm boom stand, pillar stand. The microscope has an overall magnification range of 7X-45X. The binocular viewing head has an interpupillary range of 55 to 75mm, a 45-degree inclination to reduce eye and neck strain, and 360-degree rotation to enable sharing. The WH10x20mm super-widefield high-eyepoint eyepieces combine with the 0.7X-4.5X zoom objective to provide continuous zoom magnification and a longer working distance for inspecting large-scale specimens that require handling or repair. The microscope includes a 0.5X Barlow lens that can be added to the objective to decrease the magnification range. A Barlow lens with a magnification of less than. Magnification range: 3.5X-45XZoom Objective Power: 0.7X-50X Eyepieces (DIN, 30mm): WH10x20mm high-eyepoint Zoom Range: 13:1 Field of View: 2-1/2" Optical working distance: Up to 8" Microscope Stand: Single-arm boom stand==>Pillar stand Head Movement: X- and Y-axes Illumination Type: Episcopic (reflected) Package includes:1 x KS-7050-B3 0.7-50X HD Binocular Microscopes