Digital hairspring type. Accurate measurement positioning and accurate data LED light source, low consumption and long battery life Many technology and design patents
Specification：
Range of data display：
Binocular pupillary distance：
44～83mm
Left or right pupillary distance：
2～41.5mm
Effective range of measurement：
Binocular pupillary distance：
45～82mm
Left or right pupillary distance：
22.5～41mm
Indication error：
≤0.5mm
Rounding error：
≤0.5mm
Distance of target：
30cm～∞
Power source： Voltage：
DC 6V ,2 pieces AA battery
Time for automatic shut-off：
1 and a half minutes after stopping operation
Overall dimensions：
219mm(L)×169mm(W)×86mm(H)
Weight：
0.7kg
Optisun, Taizhou City Jiangyan Import&Export Trade Co.,Ltd
Rm 102,23th Bldg. No.99,Changyingcun Road., Nanjing, 210028 China
