| B-290TB |
| Observation mode: Brightfield. |
| Head: Binocular, 360° rotating and 30° inclined. Interpupillary distance |
| from 48 to 75 mm; dioptric adjuctment on left eyepiece. Built-in 3.1 MP |
| camera. |
| Dioptric adjustement: On the left eyepiece tube. |
| Eyepieces: WF10x/20 mm, high eye-point and secured by screw. |
| Nosepiece: Quadruple revolving nosepiece, rotation on ball bearings. |
| Objectives: |
| N-PLAN 4x/0.10 N-PLAN 10x/0.25 |
| N-PLAN 40x/0.65 N-PLAN 100x/1.25 (Oil/Water) |
| All with anti-fungus treatment. |
| Specimen stage: Double layer rackless mechanical sliding stage, 150×139 |
| mm, 75×33 mm X-Y movement range. Vernier scale on the two axes, |
| accuracy: 0.1 mm. |
| Focusing: Coaxial coarse and fine focusing mechanism with limit stop |
| to prevent the contact between objective and specimen. Adjustable |
| tension of coarse focusing knob. |
| Condenser: Abbe N.A. 1.25, with objective-coded iris diaphragm, |
| focusable and centerable. |
| Illumination (Fixed Koehler type): X-LED3 type with white 3.6 W LED |
| (6,300 K) and light intensity control. Multi-plug 100-240Vac/6Vdc external |
| power supply. |
