Plastic promotional ruler with pencil sharpener by Delta Air Lines

This promotional ruler with pencil sharpener was produced as a marketing item for Delta Air Lines, likely during the 1980s or 1990s when airlines commonly distributed branded office supplies as promotional materials. The item features both inch and centimeter measurements along with the Delta Air Lines logo and slogan "Delta Air Lines is ready when you are." Airline memorabilia like this ruler-sharpener combination represents the golden age of airline promotional items when carriers competed through branded merchandise. Collectors of aviation memorabilia and airline ephemera particularly value these items for their nostalgic connection to commercial aviation history and airline brand evolution. Such promotional items document the marketing strategies of major carriers during a time when tangible branded items were key to customer loyalty programs.