small knob that moves the body tube when focusing using the high power lens to have a sharp image.
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small knob that moves the body tube when focusing using the high power lens to have a sharp image.
small knob that moves the body tube when focusing using the high power lens to have a sharp image.
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Answer:
j. Fine adjustment knob
Explanation:
it is smaller than coarse adjustment knob these two are the only choices for knobs