64SR Rustless steel rule with chrome anti-glare finish which provides a marked contrast to the permanent black figures and graduations.Dual marked imperial and metric.Two sides, four edges. Inches, 16ths, 32nds, 64ths, 20ths, 50ths, 100ths.mm, 1/2mm. Figured every 10mm in mm.Length: 1000mm (39 in).Width: 25mm.Thickness: 1mm.