Product description:
External Reading Lensmeter SML-II - INS-11031<br /><br />Dimensions: 15 x 8 x 21 in / 38 x 20 x 53 cm <br />Weight: 13 lb / 6 kg<br /><br />Specifications:<br /><br />- Range of measurement: 0D to ±20D<br />Minimum: 0.125D graduation up 0D to ±5D 0.25D graduation over ±5D to ±25D<br />- Cylinder axis range: 0~180° step 1°<br />- Prismatic power range:<br />Prism diopter of pattern A: 0-5 prism diopters,1? graduations<br />Prism diopter of pattern B: 0-20? prism diopters,1? graduations (with prism compensation device)<br />- Prism base angle: 0 to 180 degree,minimum scale value 1 degree 180 degree to 360 degree Minimum scale value 5 degree<br />- Eyepiece adjustment: ±5D<br />- Dimension of objective lens: F16 ~ F80MM<br /><br />- Lighting bulb: 6V / 2A 12W <br />- Bi-Voltage AC 100V 60hz/220V 50hz <br />