Since the scale line of a general ruler has a width, many people have had the experience of trying to draw a line of the correct length with a ruler and wondering 'how far should I draw this scale ...

If you use rulers on a daily basis or need to upgrade your existing measuring stick, you might be interested in the T3 scale aluminum metal ruler set ...

Replace your ruler with a new scale that doesn't measure in centimeters, but instead measures grams. Now you can directly measure the mass without any calculations.