| Measuring way | Fisso interference principle |
| CAL | 25mm |
| Ratio | 1-5 times |
| Laser source | He-Ne laser (λ = 632.8nm) |
| Resolution of the | 795H*596V |
| Accuracy of plane test | PV λ/20, RMS λ/100 |
| Spherical surface accuracy | PV λ/10, RMS λ/50 |
| Power supply | AC 220V 50HZ |
| Standard accessories | Ordinary display |
