The key to typographic visibility is in the x-height

We were recently instructed by a public sector client to use a minimum of 12pt type on a series of publications – in accordance with the Royal National Institute for the Blind’s typographic guidelines. But with a little digging we discovered the charity does accept that it is, in fact, the x-height that is the factor.

Accordingly, the RNIB’s official recommendation for legibility is a minimum x-height of 2mm. This information may help avoid further rattles being hurled out of prams.

Roger Felton

Managing partner

Felton Communication