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Technos Outdoor Min/Max Mercury Thermometer, Made From Quickset Plastic, Temp Range: -30/50oC - Adelab Scientific
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How to Easily Reset Oral Thermometer Help Tutorial Shake Shaking Tutorial Instructions Guide - YouTube
![Help. So this is the second digital thermometer I've bought that says my tank is at 90F degrees. My top fin one has always said my temp is around 76-78F. Why is Help. So this is the second digital thermometer I've bought that says my tank is at 90F degrees. My top fin one has always said my temp is around 76-78F. Why is](https://preview.redd.it/kz8aqwkyion91.jpg?auto=webp&s=29bb84df20c11187eac50b6001d57739ba3d3f5b)