See Through Acrylic Ruler, 18", Clear
Ideal for home, school and office. Accurately scaled in 1/16'' on one side and millimeters on the other. Ends have extra margins for clear starts and stops and plumb lines to aid in checking right angles. Raised beveled edges. Hang-up hole. Ruler Type: Standard/Metric
Length: 18'' Standard Scale: 1/16'' Metric Scale: Millimeters.