関連ワード:  coarse focusing knob microscope function    fine focusing knob microscope function    rough focusing knob microscope function    coarse focus knob microscope definition    coarse focus adjustment knob microscope function    fine focus knob microscope definition    fine focus adjustment knob microscope function    coarse and fine focus knob microscope function    what does the coarse knob do on a microscope  
結果 : coarse focusing knob microscope function