Medical devices. How to use?

The word „thermometer“ is of French origin and was first used in 1624. in a French mathematics text. The first modern thermometer, completely closed-ended and containing alcohol, was produced by the Grand Duke de'Medici of Tuscany about 20 years later. Measuring the temperature with such a thermometer would take 20 minutes. in 1866 Sir Thomas Allbutt developed a clinical thermometer that could take a temperature in 5 minutes.