| PM1805 Specification Details |
| Optical system | Finite Optical System, 160mm |
| Observation tube | Monocular |
| Inclination | 45º inclined , 360º rotating |
| Analyzer | Swing in/out analyzer |
| Polarizer | Swing in/out polarizer, rotating 360º |
| Eyepiece(s) | Widefield WF10X/18mm, with plain cross hair reticule |
| Nosepiece | Reversed quadruple revolving nosepiece with click stops |
| Objective classification | EA Achromatic, DIN |
| Objective information | 4X/0.10 10X/0.25 40X/0.65/S |
| Stage | Circular rotating 360º with spring stage clips |
| Stage size | Ø135mm |
| Condenser | Focusable N.A. 1.25 Abbe Condenser with iris diaphragm |
| Focus mechanism | Separate coarse and fine focusing system with tension adjustment |
| Fine focus precision | 2μm minimum increment |
| Illumination | Built-in transmitted illumination, halogen 12V/20W with intensity control |
| Length x width x height | 220 x 172 x 372mm |
| Weight | 4.8kg |
| PM1820 Specification Details |
| Optical system | Finite Optical System, 160mm |
| Observation tube | Binocular – sliding type |
| Inclination | 45º inclined , 360º rotating |
| Interpupillary distance | 55-75mm |
| Diopter adjustment | On both tubes , +/- 5 diopter |
| Analyzer | Swing in/ out analyzer |
| Polarizer | Swing in/out polarizer, rotating 360º |
| Eyepiece(s) | Widefield WF10X/18mm, one with plain cross hair reticule |
| Nosepiece | Reversed quadruple revolving nosepiece with click stops |
| Objective classification | EA Achromatic, DIN |
| Objective information | 4X/0.10 10X/0.25 40X/0.65/S |
| Stage | Circular rotating 360º with spring stage clips |
| Stage size | Ø135mm |
| Condenser | Focusable N.A. 1.25 Abbe Condenser with iris diaphragm |
| Focus mechanism | Separate coarse and fine focusing system with tension adjustment |
| Fine focus precision | 2μm minimum increment |
| Illumination | Built-in transmitted illumination, halogen 12V/20W with intensity control |
| Length x width x height | 220 x 172 x 372mm |
| Weight | 4.8kg |









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