This Staedtler Scale Ruler is perfect if you're doing technical drawings or other work where you need to measure and create using ratios. The ruler is designed to be durable with the markings lasting for time to come.
- The ruler itself is 30 cm long.
- It provides a 1:1 and 1:2 ratio on the front and a 1:5 and 1:10 ratio on the back.
- The ruler has a durable plastic construction.
- It's clear so you can see your paper through the ruler.
