Explanatory notes
… The instruments are usually made of glass (though some may be of metal, e.g., nickel‑silver, silver, etc.), and … after the inventor (e.g., Baumé, Brix, Balling, Bates, Gay‑Lussac, Richter, Tralle, Sikes, Stoppani, etc.). … is placed a calibrated quartz crystal; the temperature may be calculated from the angle through which one of the …