Related Clues:
- They're worth three points in Scrabble
- Typesetting measure
- Typesetting widths
- Some printing dashes
- Grp. gotten by dialing 911
- Mid-summer trio?
- Mummies' three
- Print unit
- Millennium beginning and ending
- Printers concerns
- 911 responder, briefly
- Letter widths
- 'Mummy' has three
- Printer's width
- 9-1-1 grp.