Editing Thermometer (section)

==== Air thermometer ====
The difference between a thermoscope and a thermometer is that the latter has a scale.<ref>T.D. McGee (1988) ''Principles and Methods of Temperature Measurement'' page 3, {{ISBN|0-471-62767-4}}</ref><ref name=":1" />{{rp|4}}

{{Blockquote|text=A thermometer is simply a thermoscope with a scale. ... I propose to regard it as axiomatic that a “meter” must have a scale or something equivalent. ... If this is admitted, the problem of the invention of the thermometer becomes more straightforward; that of the invention of the thermoscope remains as obscure as ever.|author=W. E. Knowles Middleton|title=A history of the thermometer and its use in meteorology}}

Given this, the possible inventors of the thermometer are usually considered to be Galileo, Santorio, Dutch inventor [[Cornelis Drebbel]], or British mathematician [[Robert Fludd]].<ref name=":1"/>{{rp|5}} Though Galileo is often said to be the inventor of the thermometer, there is no surviving document that he actually produced any such instrument.