NT-510 Non-Contact Tonometer
Non-contact tonometry, aligned and measured automatically
The NT-510 is a straightforward non-contact tonometer built around automatic alignment and measurement, so the reading does not depend on how steady the technician's hand is that afternoon. The screen tilts, and there is a high-speed printer built in for practices that still want a paper record at the point of measurement.
What it does
- Automatic tracking, alignment and measurement
- Tilting 5.7-inch color LCD screen
- Built-in high-speed printer
- Designed around patient comfort as well as measurement accuracy
Is it right for your practice?
Best fit
Practices that want dedicated non-contact tonometry instead of a combination instrument, and any pre-test room with technicians of varying experience.
Why consider it
Auto tracking, alignment and measurement take the operator out of the IOP number. That is the whole argument, and it is a good one - tonometry is a screening measurement whose value depends on being comparable between visits and between technicians. The screen tilts, and there is a high-speed printer built in for practices that still want a paper record at the point of measurement.
What to compare
If you also need autorefraction and keratometry, the Tonoref II does all three in one footprint and one patient stop, and unless bench space or single-point-of-failure risk is your concern it is usually the better buy. The NT-510's case is standing alone so one failure does not take out your whole pre-test line. Separately, the iCare rebound tonometers I carry measure without an air puff at all - if patient tolerance of the puff is what is driving this purchase, look there first.
Ask me about
Whether the puff is a real problem in your chairs, and what the Tonoref II costs against the NT-510 plus a separate ARK.
Specifications
| Measurement Range | 1–40mm Hg, 1–60mm Hg (selectable) |
|---|---|
| Measurement Unit | 1mm Hg |
| Measurement Mode | Automatic and Manual |
| Working Distance | 11mm |
| Alignment | Automatic vertical alignment with one alignment light and focusing indicator |
| Fixation Target | Internal green fixation LED |
| Chinrest Operation | Motorized up and down |
| Measurement Recordings | Built-in thermal printer (three readings and the average) |
| Monitor Tilting | 5.7-inch color LCD display |
| Other Features | Adjustable safety lock, Automatic air pressure control, and External interface |
| Dimensions | 10.2(w) x 18.9(d) x 17.9(h) inches / 260(w) x 481(d) x 457(h)mm |
| Weight | 42 lbs, 19 kg |
| Power Requirement | AC 100-240±10%, 50/60 Hz, 100 VA |
Worth comparing
Tonoref II ARK with Tonometry
Autorefractor, keratometer and non-contact tonometer in a single instrument, for pretest rooms short on floor space.
IC200 Rebound Tonometer
Rebound tonometry with 200 degrees of positional freedom, so IOP can be measured with the patient seated, reclined or fully supine.
AT-8 & AT-9 Applanation Tonometers
Applanation tonometers designed to mount on the Marco Ultra M and B series slit lamps.
Specifications reviewed: 2026-09-06
Manufacturer source:
Marco: NT-510 Non-Contact Tonometer.
Configurations and specifications change. Ask me to confirm before ordering.
Talk it through with me
Tell me how your practice handles this now and what you want it to do, and we can work through the options together. You do not need to have settled on a product first.