CFR›Title 16›Chapter II›Part 1213›Appendix Figure 4 to Part 1213 CorpusDaily eCFRDisplayed edition2026-04-24Last updated2026-04-24 Figure 4 to Part 1213—Neck Portion of “B” Section of Template Enters Completely Into Opening Previous Figure 3 to Part 1213 Figure 3 to Part 1213—Motion of Test Template Arrested by Simultaneous Contact With Both Sides of “A” Section and Boundaries of Opening