Made of plain white high grade molded plastic. Measurements are printed clearly on the plastic face. 3/32 1/8 3/16 1/4 3/8 1/2 3/4 1 1 1/2 3:1 1/16 in. Ruler Type: Triangular Scale Length: 12 in Standard Scale: N/A Metric Scale: N/A.Unit of Measure : Each