Have you ever used a ruler concealed with a pen inside?The Double Scale Ruler and Pen are currently available.

This ruler features two distinct scales. On one side, the proportional scales are 1:50 and 1:500. On the opposite side is a daily measuring scale. It is composed of plastic materials, and its surface has a frosted texture. By pushing the white region from the non-scale side with your thumb, you can simplytake outthe pen. So that you can immediately draw a line without having to find another pen.

Scale: 150 mm / 6 inch