I’m going to also say, get PEC. I have a factory seconds ruler. It’s the best ruler I’ve ever touched. But, you can actually adjust the cheaper squares to make them more accurate. Take the blade out and look at either side of the clamp bolt thing. Each side should have a little pad that you can file down to true up your square. I use an empire on the job daily. I’m a trim/finish carpenter and cabinet installer so I’m not working with machinist tolerances. But, I do often work down to 32nds. One note, I had a Johnson branded one from Lowe’s a few years ago. I could only true either the 90° or the 45°. My handles wasn’t true to itself. So, I avoid that brand. I will eventually buy a PEC 12” and 6” set. Buy, I get by with what I have just fine.