What should be the height of letters on a safe water tag?

The height of letters on a safe water tag should be 7/16 inch. This standard ensures that the text is legible and easily readable, which is crucial for conveying important safety information related to water quality. Clear visibility is essential for tags that provide guidance or warnings, so this specific height has been established to promote consistent readability across various applications. The choice of 7/16 inch strikes a balance between being large enough to be seen and not excessively imposing on the tag's design, allowing for necessary details to be included alongside the text.

Other heights, such as 1/4 inch or 1/2 inch, may not meet regulatory standards for visibility, potentially leading to misunderstandings or overlooked information that could affect safety. Similarly, a height of 3/4 inch could be too large, making the tag cumbersome or less effective for its intended purpose. The 7/16 inch height is thus a well-considered specification for maintaining the effectiveness of safe water tags.