Title: Zero, if I could!!
Review: I teach how to compost in my high school class. I have other compost thermometers, but needed more. In my search, I came across these (Mantis 201101). I bought three based on the positive feedback. Wrong choice. One thermometer never worked. It took about three more uses for the other two to stop. Like a previous reviewer stated, the rod somehow turns and the dial turns along with it. I buy almost everything from Amazon. I never have a problem. I fully depend on the reviews, but never gave one. I felt that it was necessary for the buyers to know that these are junk and that Amazon did not stand behind them!!
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