It is everything they say it is. No instructions for installation but if you are a machinist then it's no different than any other installation. The scales are glass so as always, be careful to not drop or just slap them on. You must make sure they are true and indicated to the axis. I personally like the owner's manual. It was just English and I didn't have to thumb through 5 other languages. So far the DRO works fabulously.