Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Digital does not mean accurate

I purchased this item because I wanted the accuracy of a digital tool. At first, I was measuring an angle of 35 degrees and did not notice any problems. But, when I opened it to 90 degrees, I was surprised that the swinging arm seemed visibly wrong. So I started checking it with several other tools. The Denali was consistently wrong by 1.5 degrees. Even an old-fashioned mechanical protractor can do better than that. I can't even donate this to a thrift shop because it's no good for anyone. The only thing that is digital about this tool is the readout. Now I have to spend money again on the same tool made by another company that (hopefully) has quality control.