Westcott C-Thru Transparent Metric Ruler 24"
The Westcott C-Thru 24" Transparent Metric Ruler is calibrated in 16ths to the inch with 8ths graph feature on one side and millimters on the other. Zero centering scale, so you can measure equally left and right from a centered starting point. Transparent plastic for easy viewing to the page. Laminated for durability. Perfect for your drafting and drawing needs.