【New, Unused】 Cloud-Shaped French Curve Ruler, 18cm, Set of 12, CAT NO.811-0002

My father bought this about 20 years ago for work, but he never used it and it was stored in a chest of drawers, so I'm listing it for sale!

French Curve Ruler, 18cm, Set of 12
CAT.NO,811-0002
Transparent Plastic

[Quoted from the internet below]
○ Product Description
A type of curve ruler.
This is a set of rulers shaped like clouds, and it is a tool for drawing freehand curves that was commonly used before CAD allowed for easy handling of curves.

○ How to Use
French curve rulers are used to draw curves that cannot be drawn with a compass or template.
It is a set of several rulers with complex shapes, each having multiple curves.
To draw a curve, find a section where the ruler matches four consecutive points in the series of points the curve is to pass through, and draw a line between the two central points. Repeat this process to draw the curve.

New and unused.
I opened it for the first time for photography.
The box and the paper inserted between the rulers have deteriorated due to age.
There are minor scratches due to being stored at home.
Please only purchase if you understand this.

☆ This item is also listed on other sites, so it may be suddenly removed. Thank you for your understanding.

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