Create your own centimeter ruler. Then, estimate and measure with lengths with it. Warm up with a Mystery Math Mistake as you add two 2-digit numbers using a decomposition strategy. Think through ...

Designers, engineers, builders and students looking for a versatile ruler which offers both millimeters and inches together with a unique aluminum design may be interested in the Re-ruler created by ...

Titaner's new Mix 3.0 ain't your average ruler. The clever dual-scale device boasts attributes such as an extendable measurement system, a measuring caliper, a magnetically retained pen, and a slide ...

which is now available in lengths up to 45 cm or 18 inches depending on your preference. The lightweight ruler has a number of unique design elements including a 30° angle which makes it easy to pick ...