When you're outside doing big science, you will often need to measure big distances too. Imagine you're testing the propulsion power of a air rocket you've designed and want to measure how far it flies - what you'll need is a long tape measure!

The Wind-up Open Tape Measure measures up to 100m. It's also housed in an open case, meaning if you're out in the elements, you won't have to worry about dirt and sand getting trapped inside. It's the perfect all-terrain tape measure!

Metric scale.