Instruct: Classify a given review as either positive or negative.
Query: Worthless

I am so disapointed in my thermomoeter. After carefully reading the instructions and properly setting the emissitivy settings for whatever I was measuring, this thermometer is super inaccurate.I'm talking about being off by over 5 degrees even when the Emissivity setting is set right.If somebody in my house didn't accidently throw out the packaging yesterday, it would be going straight back. This thing is useless.I used a less expensive model at work that didn't have the emissivity setting, but seemed to be within 1 or 2 degrees of everything I measured.