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    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.

    The AT-9 Applanation Tonometer features smoother rotation and operation which allows for more accurate positioning and approach at the patient cornea.

    Slit Lamp Model Tonometer MountsUltra M3, Ultra M5
    Tonometer MountsM3 #1688, M5 #1687
    Measurement MethodApplanation type (observed with left eye on the slit lamp)
    Depression Area7.354mm2
    Diameter of Measurement Depression Area3.06mm
    Measurement Range0 ~ 80mmHg
    Minimal Scale2mmHg
    Equation for Conversion from mmHg to kpa1mmHg = 101325/760Pa = 133.3Pa 100Pa = 0.1kPa