33 C.F.R. § 181.17 Label numbers and letters.
Title 33 - Navigation and Navigable Waters
Letters and numbers on each label must: (a) Be no less than one-eighth of an inch in height; and (b) Contrast with the basic color of the label, except that the date of certification may be permanently stamped, engraved, or embossed on the label.
Title 33: Navigation and Navigable Waters
PART 181—MANUFACTURER REQUIREMENTS
Subpart B—Manufacturer Certification of Compliance
§ 181.17 Label numbers and letters.
