| Code | Graduation | Magnification | View field | Eyepiece | Objective |
|---|---|---|---|---|---|
| ISM-PM20 | 0.05mm | 20X | Ø9mm | 10X with graduation | 2X (numerical aperture: 0.05) |
| ISM-PM40 | 0.025mm | 40X | Ø4.5mm | 10X with graduation | 4X (numerical aperture: 0.1) |
| ISM-PM50 | 0.02mm | 50X | Ø3.6mm | 10X with graduation | 5X (numerical aperture: 0.12) |
| ISM-PM100 | 0.01mm | 100X | Ø1.8mm | 10X with graduation | 10X (numerical aperture: 0.25) |




