Review on 📏 Classroom Ruler: Flexible Plastic Straight Edge, Measuring in Inches by Adam Rogers

I used these rulers in a multipoint spirit level. I chose this item for the transparency so I can see the liquid clearly. Only annoyance common to all such rulers - Metric starts on one side and from one end, English on the other side and from the other end - you can't convert with a ruler. I didn't try to judge the accuracy. It doesn't matter in this application as long as consistency is maintained.