Onerbuy T-Shaped Sliding Gauge Sewing Measuring Ruler Tool No Hassle Triangles Gauge Handy Hem Gauge, Seam Allowance, Buttonhole Spacer and Circle Compass

Whilst these look good and sturdy, they're not. Flimsy is the wrong word but they bend, i can bend the diagonal one virtually around my wrist. Floppy! thats the word.