Co-axial focusing combines the coarse and fine adjustment knobs on a single axis. This ergonomic design is highly beneficial for both students and experienced users as it allows for swift, precise focusing with minimal hand movement, enhancing comfort and speed, especially during high-magnification work.

Yes. The digital head includes essential **measurement calibration** capabilities, allowing users to accurately perform **line measurement functions** on captured images. While it is excellent for educational purposes and basic QA, for highly specialized, complex quantitative research, images can be exported to PC software for advanced analysis.

No. The entire system uses a single power source. The **LED illumination system** utilizes an **SMPS (Switch Mode Power Supply)**, which efficiently handles the power requirements for both the bright, stable LED light source and the integrated 7-inch LCD digital head, operating across a wide voltage range ($100\text{V}–220\text{V}$).

**Semi-Plan Achromatic objectives** are an upgrade over standard Achromatic objectives. They provide significantly improved **field flatness**, meaning the sharp focus extends much closer to the edge of the field of view (typically $80\%$), offering clearer images for both visual observation and digital capture compared to cheaper standard Achromat lenses.