Budget price stereo microscopes
http://www.usedmicroscopes.co.uk/bargains.html
http://www.usedmicroscopes.co.uk/stereomicroscopes.html
If considering purchase of a stereo microscope (useful for relaxed 3D examination of e.g. pivot holes) , Brunel Microscopes often has s/h and ex demo instruments. I bought a DM6 for my nephew and it's excellent .. has built-in incident illumination. It's battery powered … mains powered are a little more expensive.
If you're not sure which specification might suit your needs, I'm happy to advise. Best to choose an instrument with built-in illumination.
All the budget price modern stereo 'scopes are made in China but any Chinese models sold by Brunel are fine.
http://www.usedmicroscopes.co.uk/vintage.html
In the Vintage section, older British models are listed e.g. Vickers and Beck … also worth considering but might lack built-in illumination.
Please don't confuse binocular compound microscopes with stereo models … stereo inspection models have a stereo objective lens(es) and are usually relatively low power i.e. 5x to 20x magnification
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