- Eyepiece: Wide field WF10X (field number: Dia 22mm)
- Objective: Equipped with bright field objectives
- PL L10X/0.25 (Work distance); 5 mm
- PL L20X/0.40 (Work distance): 8.80 mm
- PL L50X/0.70 (Work distance]:3.68 mm
- PL L100X/0.85 (Dry),(Work distance): 0.40 mm
- RYS-50M-BD: Equipped with bright & dark field objectives
- PL L5X/10.12 BD (Work distance); 8.05 mm
- PL L10X/0.25 BD (Work distance) :7.86 mm
- PL L20X/0.40 BD (Work distance): 7.23mm
- PL L50X/0.70 BD (Work distance): 2.50mm
- Eyepiece tube: Inclination angle is 45° I IPD: 53-75 mm
- Focusing: coaxial coarse/fine with tension adjustable
- Minimum division of fine focusing is 2µm
- Nosepiece Quintuple (Backward ball bearing inner locating)
- Stage: Mechanical stage I Size: 242mmX200mm Moving range: 30mmX30mm
- Rotundity and rotatable stage size: Maximal measurement is Dia 130mm
- Minimal Clear aperture: Dia 20mm
- Illumination system: 6V 30W halogen and brightness enable control use in RYS-50M 12V 50W halogen and brightness enable control., use in RYS-50M-BD
- Integrated field diaphragm, aperture diaphragm and puller type polarizer.
- Equipped with frosted glass and yellow, green and blue fitters
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