Even with the standard in hand, engineers make mistakes. Here are three real-world scenarios where referencing the PDF’s intent solves the problem.
I cannot share or host the PDF due to copyright. If you need the exact hole pattern dimensions (e.g., for a CAD model), let me know and I can provide the public-domain numeric specifications from the standard.
This assumes you're building a feature to the standard’s specifications from its PDF.
The EIA310D standard PDF is a widely available document that provides detailed specifications for electronic components. The PDF document typically includes: