1. Easy-to-operate aperture hand-wheel with a semi-circle, Small/medium/large circle fixation star, slit, and red-free
filter with a contrast-enhancing effect.
2. Includes a filter wheel engageable for all apertures with a symbol display, red-free filter.
3. Optimized high-performance optics with an aspherical condenser lens.
4. Parallel beam path.
5. Dust-proof.
6. Large selection of power sources: handy and stable handles, practical chargers, and well-conceived diagnostic stations.
