Related Clues:

• Typesetting measures
• Printer's measures
• Typography units
• Millennium ends?
• It's roughly a sixth of an inch
• 1/6 of an inch
• Type widths
• About 1/6 inch
• Sizes of some spaces
• Dash widths
• Typography option
• Tommy has a couple
• See 43-Across
• Type choice
• Some dashes