This 18 inch ruler. : r/mildlyinteresting

Easy Read Stainless Steel Ruler, Standard/Metric, 18.25 Long, Blue - mastersupplyonline

18 Zero Center Stainless Steel Ruler, This metal scale ruler has a metric outlined on the opposite bevel., Hang hole for convenient storage,

Westcott Stainless Steel Ruler, Zero Center, 18 (ZC-18)

182-143 Mitutoyo Steel Wide Rigid Rule: 18 Inch (5R) - Call 800-469-0132 or Buy Online

Westcott - Westcott Stainless Steel Ruler, Zero Center, 18 (ZC-18)

Premium Drafting Ruler made from high quality stainless steel. Stronger and more durable than aluminum, never worry about bends or inaccuracies. This

Pacific Ar, Stainless Steel Ruler Inch and Metric, with Inch (8th, 16th, 32nd), Metric (mm)

Ruler- 18in. Long- Stainless Steel

This ruler has cascading millimeter mark that makes it easier to read. : r/ mildlyinteresting

29 Pics That Aren't Front Page Worthy But Are Still Pretty Interesting So Maybe Check Them Out?

Breman Precision Metal Ruler 18 Inch - Stainless Steel Cork Back Metal Ruler - Premium Steel Straight Edge 18 inch Metal Ruler - Flexible Stainless Steel Ruler - Imperial and Metric Ruler