NTHR-4
| Optical System | Infinite Optical System |
| Viewing Head | 1 Piece Compensation Free Trinocular Head, Inclined at 30°, 360° Rotatable, Interpupilary Distance 48-75mm |
| 1 Pieces Compensation Free Binocular Head, Inclined at 30°, 360° Rotatable, Interpupilary Distance 48-75mm | |
| Eyepiece | 4 Pieces Extra Wide Field Eyepiece EW10×20 |
| Nosepiece | Inverse Quintuple Nosepiece |
| Objective | Infinite Plan Achromatic Objective 4×、10×、40×、100× |
| Condenser | Swing Condenser N.A.0.9/ 0.25 |
| Focusing | Coaxial Coarse & Fine Focus Adjustment, Fine Division 0.001mm |
| Stage | Double Layers Mechanical Stage 185×142mm, Moving Range 75×55mm |
| Kohler Illumination | External Illumination, Halogen Lamp 24V/ 100W |
| Pointer | Green LED Pointer , Brightness Adjustable |
| Two Color LED Pointer , Brightness Adjustable | |
| Photo Attachment | three people side to side |
| Video Adapter | C Mount 1× |
| C Mount 0.5× |
