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GD&T Basics
Your Best Resource to Learn GD&T
For agents: Free GD&T training, symbol guides and blog articles explaining geometric dimensioning and tolerancing for engineers and inspectors. Mostly sitemap-style page li
gdtgeometric dimensioning and tolerancingengineering trainingtolerance zonestrue position
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- Education
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- Documentation: developer or product docs worth reading, nothing to call
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- 2026-10-19T10:41:08.149Z
- Last checked
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Their llms.txt
The beginning of the file, from our validated copy saved 2026-10-21T10:47:49.159Z. Cached copy · Source on gdandtbasics.com
Generated by All in One SEO v4.9.6.2, this is an llms.txt file, used by LLMs to index the site.
# GD&T Basics
Your Best Resource to Learn GD&T
## Sitemaps
- [XML Sitemap](https://www.gdandtbasics.com/sitemap.xml): Contains all public & indexable URLs for this website.
## Posts
- [Free GD&T Training Blog](https://www.gdandtbasics.com/gdt-advice/) - Get access to GD&T training, free online resources, tips, advice and answers from experienced engineers on the GD&T Basics blog.
- [Collecting Dots vs. Connecting Dots: Why Most GD&T Learning Doesn’t Stick](https://www.gdandtbasics.com/collecting-dots-vs-connecting-dots/) - If GD&T has felt frustrating or hard to apply—even after GD&T training—were you being taught the dots, or being taught how to connect them?
- [Common Thread Information: Diameters, Pitch, and Threads per Inch](https://www.gdandtbasics.com/common-thread-information-diameters-pitch-and-threads-per-inch/) - To understand the thread requirements on your drawing, you need to know common standard thread information: thread diameters, threads per inch and thread pitch.
- [Our experience at IMTS 2022](https://www.gdandtbasics.com/our-experience-at-imts-2022/) - We attended IMTS 2022 for the first time as an exhibitor, and it was an amazing experience!
- [Common GD&T Student Questions: A Single Point as a Secondary Datum](https://www.gdandtbasics.com/single-point-as-secondary-datum/) - In this video, Jason discusses whether a single point (without clocking) can be used as a secondary datum in a feature control frame.
- [Common GD&T Student Questions: Identical Virtual Conditions for Mating Boss and Bore Features](https://www.gdandtbasics.com/identical-virtual-conditions-for-mating-boss-and-bore-features/) - Is it allowable to have identical Virtual Conditions for mating boss and bore features? Watch this video to learn how to calculate and compare Virtual Conditions of mating features.
- [Common GD&T Student Questions: Perpendicular Datums from Imperfect Features](https://www.gdandtbasics.com/perpendicular-datums-from-imperfect-features/) - In this video, Jason explains how perpendicular datums can be derived from imperfect datum features.
- [Technologist vs. Senior-Level GDTP Exam – Our Experience](https://www.gdandtbasics.com/technologist-vs-senior-level-gdtp-exam/) - Preparing for the ASME GDTP exam? Our GD&T instructors share tips and experience for both Technologist and Senior-level certifications.
- [Reviewing and Redlining a Bad Drawing](https://www.gdandtbasics.com/reviewing-a-bad-drawing/) - Jason reviews a bad drawing and explains each error, showing how it conflicts with ASME Y14.5 requirements.
- [Control on Multiple Profiles](https://www.gdandtbasics.com/control-on-multiple-profiles/) - Jason reviews a drawing with two identical cutouts to show whether multiple profiles can be controlled by including a multiplier with the feature control frame.
- [ISO vs ASME Position Tolerance](https://www.gdandtbasics.com/iso-vs-asme-
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