I have the one just mentioned as well, though it was given to me. After adjusting it to make sure it was setup properly, I find it's easy to use and accurate if you use it properly. I guess the biggest problem is finding perfectly level ground to check it on. I have found a spot in my driveway that I've found to be level, and I just use that spot when I check camber.

PJ

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83 Rabbit GTI - future ITB