not even worth 1 star! Totally disappointed with this product! Upon removing the item from the shipping box, it showed approximately 250 degrees. I soon realized that when this particular block was tapped lightly with a finger, the indicator needle could change position randomly, sometimes by as much as 50 degrees. I suspect that the internal mechanism has been disabled somehow or not. properly secured. Poor design and/or poor quality control. The price was so cheap that it didn't justify the hassle of returning it. Better to just throw it away and warn others about my experience. you have been warned
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