pd meter E05-40

pd meter # E05-40 * The color of this PD meter is the original color of material and not with painting. It will not fade after several years.* The light source is LED and power-saving. Two batteries can work more than three months.* Light source adjusting is the most attractive feature of this PD Meter.* It can be shut off manually or automatically. The time of automatic shut-off can be adjusted during half a minute and 3 minutes.* The quality of this PD Meter is comparable to Shin-nippon and Essilor’s . But value for money of this PD Meter is much lower than them.* Features : 1.It features consecutive measurement, direct point sampling and high accuracy of orientation, with mechanical hairspring being used to level at the reflecting point of human cornea. 2.Dopting line-shaped sensors of high definition, advanced intellectualized electronic system and digital display which allows the testing results more visible, legible and accurate. 3.The design of LED lamp-house and low power consumption makes the battery life prolonged. 4.The brightness of LED is adjustable. 5.+2.00D compensation for the degree of eyesight is avaliable. * Technique Parameters: 1.Effective range of measurement: binocular pupillary distance:45-82mm,left or right pupillary distance:22.5-41mm 2.Absolute indication error : ≤0.5mm 3.Absoulute dissymmetrical error : ≤0.5mm 4.Absoulute rounding error : ≤0.5mm 5.Distance of targent: 30cm ∞ 6.Time for shut-off : about 1 minute after stopping operation automatically, or turn it off manually. 7.Electric VoltageDC 3V( 2 pcs 5# AA battery) 8.Weight0.7kg 9.Dimensions: 221mm x 166mm x 63mm Always Quality Guarantee and lowest price !