Koala Tools | Ring Ruler 360 - Circle Stencil & Templates Tool | 3"- 6" Adjustable Diameter - Geometric Tool for Drawing Circles

These are crap and don't work as well as advertised. The plastic is too stiff and the "teeth" are junky, so it causes the ruler to pop open when you try to make smaller circles. I've tried working with it to see if it can become more pliable so it holds, but the teeth still aren't strong enough to hold it in place on smaller circles. You can only turn it about halfway until it pops open. Two thumbs down.

THE INK COMES OFF VERY EASILY, you need to handle by the back or outer edge, or the ink comes off!!! I loved them, so if the company changes the ink, I will buy again, but not until improved!!!

I see the mistake people are doing using this product, this ruler is 3” to 6” so if you are trying to make a circle smaller than 3” it will be difficult, you are suppose to slide the ruler not snap it, it works great providing you slide to your measurements, it took me a few times before I realized I was doing it wrong, good luck

Its ok but doesn't hold a circle shape very well when you are trying to set down a mark. Especially when you are talking about the smaller circles. I put it aside and just use what I was using before, plates or cups or whatever circle works for my project.

if you are careful this circle temple is very handy. it is very flexible so when marking a circle you must not push hard against the template. used properly it works like its supposed to.