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Light page demonstrating recommended line length with a real body paragraph measured against a 0-90 character ruler that highlights the optimal 50-75 band.
Summary
The line-length page: a real body paragraph laid over a character-count ruler, with the recommended 50-75 character measure highlighted as the optimal band.
Visual description
White background, standard header ("Typography" / "Line Length", page "43"). The left column holds "Line Length" and a short paragraph recommending 50-75 characters per line. The right two-thirds is a large cream rounded panel with a horizontal ruler scale across the top marked 0, 35, 50, 75, 90 in violet, with dotted vertical guide lines dropping from each mark down the full panel. A pale-lilac shaded band sits between the 50 and 75 marks to flag the optimal range. Two real body paragraphs of Docusign copy (about its SBTi emissions pledge) are set across the panel so the line endings fall against the ruler, making the actual measure visible against the recommended zone.
Key takeaway
Measuring a real paragraph against a labeled character ruler and shading the optimal 50-75 band, so "keep lines to 50-75 characters" becomes something you can see and check rather than count. Using genuine body copy, not lorem ipsum, makes the demonstration honest about real line breaks.
Reuse notes
A clear reference for the line-length or measure page of a type system. The ruler-with-highlighted-band device transfers to any range-based rule (margins, image sizes, spacing). Needs a paragraph of real copy long enough to span the scale.
From this deck: Line length character count guide
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