I got one of those $40 USB digital microscope cameras and it works very well for me.

Since it has its own flexible stand, I do not need to hold a device, which allows me to see what I am doing in real time.

The built-in LED flashlight provides good lighting over the covered area.

They are available on-line from various vendors.

Just make sure to get the one with the flexible arm stand, as it has a wider reach than the other stand.

73 de W4OED
Oscar