This is a useful square for many things. It is overall solid build, with the main components made out of metal. The built in levels, adjustable positioning of both rulers, and the sliding lockable drill guides you're sure to find lots of uses for this. I would suggest using the drill guides for just starting your holes as the aluminum is probably prone to wear out if you aren't careful, but if you are I'm certain it will last for a long time.
This is a useful square for many things. It is overall solid build, with the main components made out of metal. The built in levels, adjustable positioning of both rulers, and the sliding lockable drill guides you're sure to find lots of uses for this. I would suggest using the drill guides for just starting your holes as the aluminum is probably prone to wear out if you aren't careful, but if you are I'm certain it will last for a long time.