A wide-angle microscope eyepiece with 10x magnification and a diameter of 30.5 mm. The eyepiece is equipped with a centrally placed cross with a scale, it is for precise setting and measurements.
Before use, the eyepiece should be calibrated using a micrometer slide. Calibration should be performed for each microscope lens - as a result we obtain the micrometer scale parameter for a given microscope and lens. • basic scale from 0 to 10 units • the vertical line is located at the 5th scale unit • each basic scale is divided into 10 parts 2 years 
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