How many points in an inch of type?

You need to make capital letters an inch high, and you need to know the point size, correct? The answer is, it depends on the font.Look at these three letters:

Wxy

There are two measurements most type has: point size and x-height. Point size, in our example, is from the top of the W to the bottom of the descender of the y. x-height is what it sounds like. Some fonts, like Machine, don't have minuscule letters so there's no x-height for them.

In other Words, a 72-point capital letter won't be an inch high because that 72 points takes into account descenders.

To make inch-high letters, draw two horizontal guides an inch apart, type your text with the baseline on the bottom one, then scale up the type until it touches the top one.