The Marco AT-9 Applanation Tonometer for the M3 & M5 Ultra M-Series model slit lamps is sleek, trim, and beautifully designed. The AT-9 is the perfect complement to the new Ultra M-Series of slit lamps, and provides us with an important piece of instrumentation.
| Slit Lamp Model Tonometer Mounts | Ultra M3, Ultra M5 |
| Tonometer Mounts | M3 #1688, M5 #1687 |
| Measurement Method | Applanation type (observed with left eye on the slit lamp) |
| Depression Area | 7.354mm2 |
| Diameter of Measurement Depression Area | 3.06mm |
| Measurement Range | 0 ~ 80mmHg |
| Minimal Scale | 2mmHg |
| Equation for Conversion from mmHg to kpa | 1mmHg = 101325/760Pa = 133.3Pa 100Pa = 0.1kPa |