As a manufacturer of precision miniature machinery, I use a bunch of different magnifiers to get the job done. These are a few of my daily helpers.
Vision Aid Website: http://visionaidmagnifier.com/
Enter: VisionAid Magnifier
Discount Code: AI10 ( thats Capitol A eye ten ) Good for 10% off
Patreon Support: https://www.patreon.com/joepie
Website: https://www.advancedinnovationsllc.com
Web Store: https://www.advancedinnovationsllc.com/shop