All three were disabled. "0", if there was one, it wasn't. Two of the three were misaligned by about 1/64" and the other by 3/64" (unusable). Again, they are offset from "0". the gradation range is accurate. If you're a machinist, you should probably run like hell. That being said, if you're a carpenter, especially a mediocre carpenter like me, they're not terrible. I use a tape measure most of the time and I'm used to "burning an inch" when I need precision so I can do the same to them. The 3/64 inch ruler is color marked and used solely as a cutting guide or ruler. The other two will serve me well.
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