These head lice pictures and images let you see what these insects look like close up.
The head lice and nits are very small. Look at the image showing the pencil point to get a size comparison. A head lice nymph will easily sit on a pin head.
These pictures of head lice and nit egg cases have been taken with a digital optical microscope at magnifications between x10 and x60. For pictures of head lice and nits using a scanning electron microscope use the links.