Dino Lite Digital Microscope
There is a website recommended by Karlo about USB microscope that can act as a webcam and at the same time a microscope camera rolled into one. It has a software that can take a picture and measure the object you want. It comes with a boom/holder for the camera with different zoom level (up to 400X) and megapixels. This is good for repairing small SMDs in electronics equipment and you can use this to inspect fine cracks either on the component or on the board. At the moment there seems to have a problem in uploading the photo to my blog. I will try to rectify it. Please click on this link to visit the website.