NPOL-3
| Head | Sliding Brinocular Viewing Head, Inclined at 45° |
| Sliding Trinocular Viewing Head, Inclined at 45° | |
| Eyepiece | Eyepiece WF10×/18 with scale of cross hair |
| Eyepiece WF10×/18 with graticule | |
| WF10x/18 | |
| Objective | Strain Free Achomatic Objective 4x,10x,25x,40x, 63x |
| Strain Free Plan Achomatic Objective 25x,40x, 63x | |
| Nosepiece | Backward quadruple nosepiece, Center adjustable |
| Focusing | Coaxial coarse & fine adjustment, Range 28mm,Fine division 0.002mm |
| Stage | Revolving Round Stage Diameter Φ160mm, Graduated in 1° Increments, Minimum resolution 6’ when using vernier scale |
| Mechanical stage, Moving rang 30X40mm | |
| Condenser | NA1.25 Abbe condenser with iris diaphragm & filter |
| Analyzer | Rotatable analyzer with gradation 0°-90° |
| Polarizer | 360° Rotatable |
| Bertrand Lens | Bertrand Lens,sliding in/out of optical path |
| Optical Compensator | λ Slip（First class red）, 1/ 4λ Slip, Quartz wedge |
| Illumination | 12V/20W Halogen lamp, Brightness adjustable（Transmitted illumination） |
| 12V/50W Halogen lamp, Brightness adjustable（Reflected illumination） | |
| Micrometer | with |
