Problems Existing in Traditional Ruler:
1. The traditional ruler is close to the paper when in use, which is easy to stain the paper and ruler.
2. Ordinary compasses cannot easily and accurately draw a circle with a specified radius.
Multifunctional non-ink ruler:
1. Bending design: avoid soiling the ruler and paper during use.
2. Sliding pointer design: convenient for users to accurately measure radius.
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It feels very similar to the compass ruler designed by cuckoo https://www.puxiang.com/galleries/4a20d39ccd58dbd02f8a15426f4f00f4?favorite=true
The color is very bright.
Two problems: 1. If there is a blocking ruler in the measuring range of the ruler when drawing a circle again, it will not be able to pass and draw a circle. 2. The ruler in sale fits the paper surface in order to draw more accurately and fit the nib more accurately.
Planting grass
Convenience
This ruler is good.