The world is full of things to measure, and scales for reporting those measurements. Some are more rational than others, some are more human-oriented than others, and some are older than others, but none of them involve thermometers that sometimes rise and sometimes don’t. This puzzle does, though!

Rules:
Normal Sudoku rules apply.
Digits on thermometers either increase or remain the same from bulb to tip. Coloring is cosmetic.

Estimated difficulty: 1 out of 5

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