Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Very inacurate themometer

I bought this thermometer for my new baby girl. However, when I tested it with her the degrees messured ranged wildly within a few minute period, from 97.1 to 99.8 so I could never trust it for fever indication. I'm not sure how anyone uses it without this problem. Maybe there is a wide range of manufacturing defects, as I have no idea how anyone uses the darn thing if all the units work like mine does!