Review on Carpenter Framing Tempered Measuring 0 12Inch by Delos Rodeo

This is a square - an L-shaped ruler with a 90° angle. The measurements appear to be accurate. How should I check this? With another ruler? Shouldn't I check this ruler first to make sure it's accurate? How can I check this? LOL That seems correct. It would be nice to have SAE on one side and Metric on the other. Thanks to modern technology, the world becomes one. I buy some products in SAE and others in metric. Nowadays the metric is used in the same way as the SAE. When working on a foreign car, you need metric tools. If you work with third-party electronics, you need metric screws. It would be nice to have both in this area, but I knew beforehand and it's on me. But it's a strong and easy to read square! I would recommend and buy again.