Eyepiece Micrometer Diameter 19mm Optical Glass Cross Ruler Net for Biogolical Microscope 23.2mm Ocular DIV 1 0.1 0.05 0.2 mm

Eyepiece Micrometer Diameter 19mm Optical Glass Cross Ruler Net for Biogolical Microscope 23.2mm Ocular DIV 1 0.1 0.05 0.2 mm

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