API 5B 6.1.1 CREST DIAMETER SETTING STANDARD REQUIREMENTS
Per 6.1.1, a manufacturer “shall have access to setting standards for thread diameter gauges […] for each size and type of thread produced.” Traditional standards may need replacing, see 6.1.3 and 7.1.11 for more.
MRP® Crest Diameter & Ovality Gage with Rod Setting Standard
MRP® Crest Diameter & Ovality Frame Setting Standards