It works by measuring the physical and angular, or 'apparent', size of a standard ruler in the galaxy ... In combination with other measurements, this will provide a better understanding of ...

If you still keep a standard ruler around, here's a digital alternative — one that's probably a bit easier to store in a toolbox. The Rollova's OLED screen helps you get accurate measurements in ...

It is the Small Q Ruler, which is basically an electric ruler that is capable of providing high accuracy measurements to the user. The Small Q electric ruler is capable of measuring straight lines ...