Choosing Letter Heights
Have you ever had to squint really hard to read what was on a sign? We have too, which is why we follow the rules of the distance legibility chart to choose our letter heights.
Obviously not everyone has the same eyesight. This chart is more for the perfect world, everyone has 20/20 vision bare minimum viewing distance, so we will try to keep that in mind. When the chart says the legible viewing distance is 7ft., we will call it 5ft., just to be safe.