The Monocular Biological Microscope is designed for educational laboratories, research applications, and professional inspections such as jewelry analysis. It comes with a WF10X wide field eyepiece and achromatic objective lenses (4X, 10X, 40X, 100X) for a broad magnification range and sharp imaging. The coaxial coarse and fine focusing system offers precise control, with a focusing range of 30mm and a fine-tune scale of 0.002mm. A double-layer mechanical stage provides accurate slide positioning, while the NA=1.25 Abbe condenser with diaphragm and color filter ensures optimal light control. The 20W halogen lamp offers powerful and even illumination, making this microscope a reliable tool for schools, laboratories, and jewelry inspection.