Specifications

Model AT-1
Model of slit lamp SM-70
SM-70N
300XL, 700GL
2ZL, 4ZL
SM-30,10
SM-30N,10N
30GL
SM-4,2
SM-4N,2N
SM-90
SM-90N
Tonometer main unit S12-17
Tonometer base S12-19 S12-20 S12-21 S12-15
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

 

Source: http://www.takagi-j.com/ENG/product/slit/AT-1/product_EN_slit_AT-1.html