Model Number: TR-ALM-800 Brand Name: Terui Key Specifications/Special Features: Auto lens meter TR-ALM-800● Adjustable LCD display screenTilt color screen provides clear view from any position such as sitting and standing.● Sensitive touch LCD display screenJust touch the screen to finish measurement, the operation could be easier and more convenient.●This new generation auto lens meter is based on HARTMAN Sensor technology. Advanced simultaneous measurement of 108 points provides a faster measurement with greater accuracy and reliability. Measurement Range Spherical degree -25D-0-+25D-0 0.01/0.12/0.25D Step Cylindrical degree: 0-±9.99 D 0.01/0.12/0.25D Step Cylinder axis 0°-180°(step: 1°) Add. 0-+9.99 D 0.01/0.12/0.25D Step Prism degree 0-15△ 0.01/0.12/0.25D Step Measurement Mode Cylinder +,±, - Prism X-Y,P-B Contact Lens Soft/Hard Measuring Mode Single/Progressive/automatic recognition Specifications Diameter of lens 20-108mm PD 40-90mm,0.5 mm Step Speed of Measurement 0.1S Display 7” TFT LCD