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

Glad to finally have this range! It is exactly 12 inches long and allows me to measure left to right and right to left in inches. If you flip the ubiquitous English/metric rulers, you are on the metric scale. Since 12" = 304.8mm the end of the metric side is not at a large mark like 300mm and you should be aware of this 4.8mm as it is around 3/16". acts, which is quite a lot. The ruler itself is a precision gauge made in Japan and is "guaranteed to conform to Japanese Industrial Standard B 7516 Grade 1".