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Anyone want to exercise their algebra muscles?


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Hello all.  I've got what should be a "simple" algebra problem, but my aged muscles are too atrophied I guess.

I bought a new TC to check the drift on my year-plus old TC.  They were positioned one on top of the other in my forge. 



With the old one on the top, it read ~60F degrees higher than the new one and with the old one on the bottom, it read ~120F lower than the new one.   

So, how far off is my old TC? 


Edited by billyO
RIP Bear....be free!


as always

peace and love




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