Flexible Curve Ruler Drafting Drawing Tool Serpentine Plastic School office supplies 30cm 40cm 50cm 60cm

The overall length of the ruler is up to 30-60cm snake ruler, built-in ruler, metric and imperial double-sided use, soft and easy to bend measurement, and good curve retention, not easy to rebound, can be arbitrarily shaped.

The two-sided ruler is equipped with ink slots for easy use.

This product is a tool for all kinds of painting, engineering drawing and design drawing.

Which size to use, this depends on the work that the individual is engaged in:

1. Urban planning and clothing use more 60cm

2. Artillery units buy more than 50cm

3. 40cm for architecture and landscape design

4. Buy more 30cm for personal use