| Ranges of  measurement;Spherical lens:-25D~+25D;
 Cylindrical lens:-9.99D~+9.99D;
 Space of readings:0.01D, 0.06D, 0.12D, 0.25D
 
 Minimum scale value
 Cylinder Axis Range0~180°Space of readings:1°
 Prism degree;Model A 0~5△ Space of readings:0.5△;Model B (with prism compensator) 0~20△ ;Space of readings:0~5△:0.5△;5~20△:1△
 
 Prism basal angle;0~180°Space of readings:1°;180°~360°Space of readings:5°
 Measurand lens DiameterΦ16~Φ100mm
 Dimensions300mm(L)×205mm (W)×455mm(H)
 Weight8.9KG
 Lamp of illumination/Power12V, 20W, halogen lamp ;
 Power 110V or 220V, 50Hz
 other function:Measure cornea contact lens/Automatic printing
 
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