1,Sphere measuring range-25 +25D unit 0.01/0.12/0.25D 2,Cylinder measuring range -9.99 +9.99D unit 0.01/0.12/0.25D 3,Axis measuring range 0° 180° unit 1° 4,Add measuring range 0 +9.99D unit 0.01/0.12/0.25D 5,Prism measuring range 0 6 unit 0.01/0.12/0.25 6,PD measuring range 40 86mm step 0.5mm 7,DiameterΦ5 120mm 8,Display LCD Monitor (5.7inches) 9,Printer thermal printer 10,Power supply AC220/110V 50/60HZ 50VA