great primer

Great primer is a typeface size standardized at 18 points, historically established as the metal type used for printing large-format English bibles and religious texts from the sixteenth century onward. In the traditional typographic measurement system used in English printing, it occupied a specific rank in the hierarchy of type sizes, sitting between English (14 point) and paragon (20 point). The physical sorts, cast in lead alloy, were tall enough that printers could set full pages with good legibility while maintaining reasonable paper economy for folio and quarto volumes.

The name derives from its use in primers, which were elementary religious instruction books widely distributed in England and its colonies. These small volumes required a size larger than body text but smaller than display faces. Great primer distinguished itself from the smaller primer size (10 point) that had served similar didactic purposes. The terminology reflects the typographic hierarchy as it developed in English foundries, where sizes were named rather than immediately numbered.

Practical characteristics and constraints

Cast in type metal (typically an alloy of lead, tin, and antimony), great primer sorts were robust enough for repeated printing runs but required careful type management. The 18-point measurement refers to the body size, the vertical distance from the top of ascenders to the bottom of descenders, which meant the actual printed character was somewhat smaller. Printers kept great primer in dedicated cases and used it primarily for title pages, chapter headings, and the opening pages of important works rather than sustained body composition, since setting large volumes entirely in this size was labor-intensive and material-expensive.

The size proved particularly well suited to large bibles because it allowed readable text in double or triple-column formats without excessive page count. A folio bible set in great primer might run 300 to 500 pages; the same work in smaller type could compress to 200 pages but risked eyestrain for readers of the era. The cost of the heavier lead and longer casting time for larger sorts meant great primer remained reserved for prestigious work where the expense was justified by the commercial or religious value of the publication.

With the shift to point-system standardization in the nineteenth century and later to phototype and digital composition, the term great primer became historical rather than practical. Modern typographers may encounter the term in historical printing studies or when working with legacy metal type collections, but contemporary 18-point fonts are typically specified directly by point size rather than by the historical name. The term survives most visibly in discussions of incunabula and early modern printing, where great primer bibles remain significant artifacts of English print culture.