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Finally got around to sorting my loose screw bin and these gauges settled every argument in seconds. The machined edges feel solid and the markings are crisp enough to read even in dim workshop light. Exactly what I needed for quick thread identification before grabbing the right fastener.

These gauges make identifying mystery bolts a breeze, the markings are crisp and easy to read even in dim workshop light. I reorganized my whole fastener bin this weekend and didn't second-guess a single match. Solid buy for anyone who works on machines regularly.

I've been putting these thread gauges through their paces in the workshop, and the precision when matching machine screw threads is spot on. They're compact enough to keep right by my bench. Helped me verify a tricky thread size in maintenance that I'd been guessing at before.