Ultraflex SAFE-T(R) Ruler

The twist-and-roll action makes it so easy to measure around a jar for a label, and I love that it won't shatter if my kid drops it on the tile floor. Even the curved lines on a globe came out accurate, which surprised me for a classroom ruler.

I’ve used this for craft projects where I need to measure around bottles and jars, and the twist-and-roll action makes it genuinely accurate on curves. The flexible plastic feels sturdy enough for my kids to handle without me worrying about it snapping.

My son loves measuring the curves of his toy cars with this ruler, and the twist-and-roll feature makes it so much easier than a standard one. The flexible plastic feels sturdy enough to survive being tossed in his backpack every day.