Explanatory notes
… for example, alcoholometers; saccharometers (used in brewing or in sugar manufacture); salinometers; … etc. Others are named after the inventor (e.g., Baumé, Brix, Balling, Bates, Gay‑Lussac, Richter, Tralle, Sikes, … . In these the temperature is measured by varying the brightness of a filament of an incandescent lamp, by means …