Helix Conversion Ruler
12.0" Length - 1/16 Graduations - Metric, Imperial Measuring System - Plastic - 1 Each - Black
Conversion Ruler offers a convenient way to measure either Imperial or metric and then get instant conversion to either. In addition to Imperial and metric measurements on the edge, the unique design incorporates a conversion scale in the center so you can convert measurements from metric to inch and inch to metric. The background is black so the white imprints of 1/16 and millimeter graduations are easy to read. Ruler is printed on both sides and made of flexible plastic."