Instruct: Classify the given review as either positive or negative.
Query: fairly worthless

For my thermometer the indoor and outdoor temperatures are always identical. Essentially the indoor temp didn't function, and only the outdoor temp would be given, regardless of which way the switch for in and out was positioned. This thermometer read much higher than another one I had, so to test this one, I put the probe in ice water (ice water is 32F or 0C) and let it adjust for a few minutes. The lowest the temp went to was 38F. Therefore, this thermometer reads 6F higher than it should. The manufacturer didn't bother to calibrate their thermometer, which makes this a non-scientific thermometer despite the name. I am throwing mine in the trash.