📏 Koala Tools Ring Ruler 360 - Adjustable Circle Stencil & Templates Tool for Accurate Circles, 3"-6" Diameter Review

If you are careful, this round temple is very convenient. It's very flexible so you don't have to put a lot of pressure on the stencil when marking the circle. When used correctly, it works as it should.

This sucks and doesn't work as advertised. The plastic is too hard and the "teeth" are thin so the ruler opens up when you try to make smaller circles. I've tried working with it to see if it can get more pliable to keep it going but the teeth are still not strong enough to hold it in place on the smaller circles. You can only turn it halfway until it opens. Two thumbs down.

So I bought them to make mandalas and they are very practical. You cannot fix the circle to draw it. The ruler slides well, but you really need to hold it together to get your circle. And the other problem is that if it's holding your drawing circle and you press too hard on the circle's ruler, it will take the shape of an oval instead. Not durable at all. But for the price, my grandchildren can use them!