A man is illustrating how a person tilts a telescope to better use a telescope.
A man is adjustig a mircoscope and then leans down to look in it.
Instructions on how to adjust a microscope are given and demonstrated.
A man is adjusting a microphone and then looks into the lens.
A man is showing how to use a microscope while another person is narrating what he is doing.
The man is doing a demonstration on the use of a microscope.
A man talks about correct microscope usage as a man demonstrates a technique.
A man is explaining how to properly use the microscope.
A man tells how to use micro scope and how to position it.
A male tilts the body of a microscope closer towards his right eye.