Uxcell Scale Ruler, Drafting Tool Measuring Tool (a12102200ux0020) Product Name: Scale Ruler; Material: Plastic; Type: 1:10, 1:15, 1:20, 1:25, 1:30, 1:33 1/3 , 1:40, 1:50, 1:75, 1:125 English and metric; Total Size (folded): 19. 5 x 2. 9cm / 7. 7" x 1. 1"(L*W) Sharp, easy-to-read graduations resist wear; Color: White, Black Architect, engineer, and mechanical draftsmen graduations; Net Weight: 21g 7. 7 inch scale ruler - ideal for scholastic and vocational use; Package Content: 1 x Scale Ruler