Asked by Mom

What is the part of a microscope that will sharpen the focus of an image? It has 13 letters and ends with an E
Answered by drwls
Are you sure about it ending with E? It could be the fine focus knob.

There is also a coase focus knob but that has too many letters. Inexpensive microscopes have only one fcus knob.
Answered by Dr Russ
projector lens and objective lens

are both 13 letters but no e at the end.
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