[green]
[Blue]
[yellow]
[Black]
This protractor is a 3L Office Products company founded in Denmark in 1969.
The best feature is a three-dimensional form. Not only is it easy to pinch and remove, but it is easy to apply force when holding the protractor, so it can catch paper and create a stable line draw.
Other popular products have a good view of memory, and a stylish design.