Westcott C-Thru Graphic Arts Ruler 18" Opaque
Westcott C-Thru 18" Opaque Graphic Arts Ruler 18" features an E-scale, 16ths, picas, points and agate scales. Includes percentage and halftone screens and proofreaders' marks. Double sided. Laminated for durability. Perfect for your drafting and drawing needs.