CFR > Title 27 > Chapter I > Subchapter A > Part 19 > Subpart G > Measuring and Proofing Equipment Requirements CFR > Title 27 > Chapter I > Subchapter A > Part 19 > Subpart G > Measuring and Proofing Equipment Requirements Current as of: 2024 | Check for updates | Other versions § 19.188 Measuring devices and proofing instruments