This is a sharp ruler with markings as shown in the pictures. As far as I can see it pairs perfectly with several of my other gauges. One side is flat (suitable for laying on a flat surface) and the other side is slightly inclined. All markings are printed on the flat side, which is different from other clear rulers I've had. This makes the markings easier to read from the "top" (non-flat) side since they won't be printed on the rounded surface. Not sure how this affects durability (not sure which side of the ruler I'm rubbing more things on).
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