Review on π OptiPro Measuring Device for Plumbing and Carpentry Applications by Joshua Follansbee
It doesn't tell you the angle of the angle, it tells you what to set your miter saw to.
I used this to install the crown bar. It works very well! Tells you what to set your miter saw on to make the perfect miter joint. Very durable and easy to use.
Pros
- Free for educational purposes
Cons
- Protection
