USB Digital Microscope (1.3MP, 200x Magnification) ,$60

This USB Digital Microscope is a fully functional magnification tool that plugs directly into a computer for up to a 200x magnified view of objects. This allows you to see even the smallest of details, in high definition, directly on your computer screen. Details like individual strands of hair or even the fine scratches on a collectible coin that would be impossible to detect with the naked eye, can easily be viewed by this amazing USB digital microscope.


http://www.chinavasion.com/product_info.php/pName/usb-digital-microscope-13mp-200x-magnification/

USB Digital Microscope with 200x Magnification--reviews

To be honest, this product is probably OK for the price, but not more. The optics are primitive, as is the PC software.

There is no separate focussing facility. To focus, you must first set the magnification level you want, then move the microscope towards or away from the subject until it comes into focus. You may need to repeat this process a few times until the picture is as you want it.

Focussing at the both extremes of the magnification is quite tricky, and at large magnifications there are actually two focal points.

Maybe this is par for the course for USB microscopes, but to be honest I was a bit disappointed, whilst still recognising that it's probably what you should expect for the price.