Measure with USB microscope. Support most USB microscope in the market.
MyMicroscope can be used with many UVC campatible microscopes, support resolutions from 640x480 to 1920x1080 and more. It will open USB microscope automatically when you connect it to your computer, then you can adjust the microscope, snap images, record videoes.
And after properly calibrated, you can use many tools to measure small objects accurately.
MyMicroscope is very easy to use, efficiently and robust.