Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Recommendations for display characters from the handbook of occupational ergonomics.
| Distance of Display from Eye (mm) | Height of Lettering | Approx. Font Size | Width of Lettering |
|---|---|---|---|
| Up to 500 | 2.5 | 7 | 1.875 |
| 501–900 (Typical arm length) | 5 | 12–14 | 3.75 |
| 900–1800 | 9 | 20–25 | 6.75 |
