is: a glass capillary with a bulb containing alcohol. Changes in temperature cause the glass and alcohol to expand (or contract) by different amounts, and the result is that the meniscus moves to different positions in the capillary. [P7.2]
can be calibrated: by marking meniscus positions corresponding to fixed points such as the boiling and freezing points of water, and then interpolating between them. [P7.2]
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