hand turns the microscope fine focus adjustment knob

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Hand turns the microscope's fine focus adjustment knob Royalty Free Stock Photo
Hand turns the microscope's fine focus adjustment knob to increase the sharpness of the image. Royalty Free Stock Photo
Hand turns the microscope's fine focus adjustment knob to increase the sharpness of the image. Royalty Free Stock Photo
   
   
   
   
Hand turns the microscope's fine focus adjustment knob
   
   
   
   
   
   
   
Hand turns the microscope's fine focus adjustment knob to increase the sharpness of the image. microscope is a piece of equipment in a science laboratory used to enlarge small images

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