A Gauge to MM plug conversion chart that doesn't skip sizes : r/piercing
Chart comparing standard screw / nut / hole sizes | Screws and bolts, Metal working tools, Drill bit sizes
Conversion chart, gauge - mm - inch | Printable chart, Chart, Reference chart
Amazon.com: Digital Caliper, Caliper Measuring Tool with Stainless Steel, Electronic Micrometer Caliper with Large LCD Screen, Auto-Off Feature, Inch and Millimeter Conversion (6 Inch/150 mm) : Industrial & Scientific
How to Read a Screw Thread Callout: 12 Steps (with Pictures)
Screw Sizes Conversion Chart & Metric to Imperial Conversion Guide | DIY Doctor
Amazon.com: Adoric Digital Caliper, Electronic Digital Caliper Stainless Steel Body with Large LCD Screen | 0-6 Inches | Inch/Millimeter Conversion : Industrial & Scientific
Converting inch threads to metric system - Threading tools guide | GSR Blog
Inch in mm or mm in inch - table - anzugsmoment.de
Imperial to Metric Conversion Chart | Heads & Threads
Elgin Fastener Group Products | Metric Bolt Conversion Data | Specialty Fasteners