Review on Shinwa Stainless Machinist Engineer Graduations Test, Measure & Inspect in Dimensional Measurement by Todd Calloway

These rulers are of very high quality and absolutely accurate. I bought several 6" and 12" rulers and they all had exactly the same accuracy. They are thicker than the cheap Chinese/Indian made levels at your local woodworking shop, they don't bend or flex so they lay flat and make the task of marking easier. The combination of metric and standard systems is a really nice feature too, with numbers and lines that are very clear and easy to read. The finish is very thin and not shiny/shiny which makes them look very pretty in bright light and should last for years.