... steel 2. With cork-backing 3. Graduation: metric & inch 4. Size: 6"/12"/24" 1. Metal ruler, steel ruler, Non-skid cork ... 2. Size:JN02-015: 6-inch, 150mmJN02-030: 12-inch, 300mmJN02-038: 15-inch, 380mmJN02-045: 18-inch, 450mmJN02-060: 24-inch, 600mm3. Unique styleWith a ...