Perfect Thank you!
Bought 2x 20cm rulers, received what looks like 2 different brands. One has no brand mark, and the end is not cut straight. The other is branded with "MC" and the end is not flush at zero. I can't cut it to the right length because the other side is also not flush but by a different amount. Over the 20cm length, they are about 0.3mm longer than they should be so they're not accurate anyway.