Should be Applanation type.
2. Should be based on Goldmann Tono metry principle.
3. Should have a measuring range from 0 to 78 mmHg in steps of 2 mmHg.
4. Should have an accuracy of ±0.5mmHg
5. Should be supplied with calibration Bar, Prism and tono meter mount base to fix with
6. Should be compatible with all models of slit lamps.