If the response to our article on the Tiruler is anything to go by, there's a lot of interest in folding-ruler multitools. The Pivot X is the latest to hit Kickstarter, boasting seven handy ...

Let's face it—rulers haven't changed much since primary school. They're flat, awkward to carry, hard to read unless viewed ...

The folding action of the ruler also lets you draw perfect circles of various radii, by sticking the tip of a pen or pencil in one of a number of marked holes in one of the arms, ...

An illustration from a 1919 Stanley catalog indicates that the company name was stamped on the ruler by that time. A similar folding pocket rule with caliper is advertised as model number 1752 in ...