DIY USB Microscope

DIY Microscope assembled from a very old USB camera and even older camera equipment.
I took the rear lens cap and drilled and filed a hole in the centre.
Then I disassembled the USB camera and carefully positioned it in place so that the USB camera was square with the lens when the cap was locked in place.  Then used hot glue to fix it in place.
Lens was mounted to a bellows.

To operate:
Adjust the length of the bellows for magnification.  Adjust the height from the lens to target object for focus.
Set the aperture to get the best amount of depth versus brightness.  Bigger the aperture number, the better the depth of field.

Download the USB Camera software.  In my case it was Microsoft LifeCam as the USB camera was a VX1000.
Only issue I have is that the old USB camera and software has a significant amount of lag, so positioning the object for viewing takes some time.