You're scaling a floor plan and you've got four different rulers on the desk. One for 1:50, one for 1:100, another for 1:200. This one rule carries all eight scales — four on each side — so you flip it over and keep working. White PVC with an anti-glare finish means the graduations stay readable under classroom lighting or a desk lamp. 300mm long, oval profile sits flat without rolling off the page
| brand | STAEDTLER |
| model | MARS Oval Scale AS1212-2 |
| length | 300mm |
| material | White PVC |
| finish | Anti-glare |
| front_scales | 1:1, 1:5, 1:10, 1:100 |
| back_scales | 1:20, 1:200, 1:50, 1:500 |
| category | Classroom Supplies |
| intended_use | Architectural scaling, technical drawing, engineering plans |
