# [OS X TeX] American Foot & Inch Symbols

David Watson dewatson at mac.com
Sun May 4 17:32:40 CEST 2008

The credit is due to Donald Knuth, cf. page 130 of The TeXbook,
Chapter 16 "Typing Math Formulas."

The single right apostrophe -> ' <- should do the same in math mode as
$^{\prime}$.

I would advise anyone who is interested in TeX to acquire the TeXbook,
simply to have the definitive resource on hand.

On May 4, 2008, at 10:23 AM, Louis S VanSlyck wrote:

> A big thank you toe David Watson for suggesting:
>
> $^{\prime}$ for feet
> $^{\prime\prime}$ for inches
>
> I should have thought of using the "^" to reduce and properly locate
> the \prime size.
>
> Lou