This handy anglizer tool can lock in any angle you desire with the knobs on the tool. You twist them down to lock in the position so you have no accidental sliding of the tool.
All of the arms of the angle template have measurements in metric and inches for precise calibrations, and the adjustable arm can slide freely allowing you to lock it into place where you want it to be, and it you can effectively measure any material you are using.
It also comes with a 100% money back guarantee, but there are not three (3) anglizers in the package. The three (3) piece refers to a tiny notebook, a carpenter's pencil and the tool itself.
The wording should be changed to "pad and pencil included" instead of DIY 3 pack.