I was looking for an angle that was slightly larger than my engineer's angle and slightly smaller than the rafter angle. But if there's anything that should be a square, it is a square, and this one was nowhere near what was delivered. This could be remedied by expanding the bottom hole and reinstalling the screws, but honestly it feels cheap and precision is the only thing that makes a square useful. It also arrived with a slight kink in the long arm - perhaps that's how it was delivered - in a padded envelope from Amazozn - but again the tool made less than useful without risky counter-bending. In general, don't bother. Rather look for the best quality.
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