150mm - 5-3/4" Full-Flexible Steel Rule - mm & Inch Graduations, 32nds & 64ths on One Side; mm & 1/2mm Rev. Edges Graduated from Same End. The Starrett 150mm - 5-3/4" Full-Flexible Steel Rule with Millimeter and Inch Graduation features a satin chrome finish. Graduations at 32nds and 64ths on one side; mm and 1/2mm on reverse. All four edges are graduated from same end. 150mm (5 3/4"), No. 31 Grad, Full-Flexible All four edges are graduated from same end.