easily and firmly. Since it's so small it's quite surprising that it's so crooked... I haven't measured it yet, but compared to 4 with the other squares I have around it, it came out at about 32. out after just a few inches around the same amount on each one so I'm pretty sure that's the one that's out.... Pretty useless I'd say and not worth going back... I'll test it with my precision instruments at some point, but even on a speed square it clearly fails and it's by no means a critical test.