The ruler has clear number lines, divided in mm, so it is easy to measure the details of objects. In particular, do not have to worry about the problem of peeling off the number line.
The ruler is made of solid plastic, good impact resistance, high durability, so it has long-term use value.
Compass with 2 solid support legs, drawing circles will no longer be too laborious. You just need to lightly plug in the compass, align the radius and rotate a simple circle to have a regular, accurate circle.
The needle pin of the compass is also very "gentle" to the page, without worrying about tearing the paper when drawing a circle.
