Overview: Has both imperial & metric. Stainless steel. Numbers & markings imprinted on very clearly. Very precise for precision work Small On the metric side, it has millimeters & centimeters & goes as small as 0.5mm. The max number of centimeters displayed on the ruler is 15.6cm. The 0.5mm lines only go from 0 to 5cm. On the imperial side, it has inches. It goes up to 6 inches & has 1/10 inch, 1/16 inch, 1/20 inch, 1/32 inch, 1/50 inch, & 1/64 inch measurements. Specification: Weight Approx: 12g Size Approx: 17 x 2 x 0.2