Spirit thermometers use a non-toxic alcohol instead of mercury to register the temperature. Like liquid mercury, the alcohol expands in volume as it gets warmer, causing the liquid to move up the thin tube inside the glass thermometer. Digital thermometers contain a device called a thermoresistor.

Which thermometer does not use mercury 7?

Digital thermometer

Digital thermometers do not use mercury and hence safe to use.

Is digital thermometer does not use mercury?

Unlike traditional thermometers, digital thermometers do not use mercury. Mercury thermometers work on the principle that a rise in temperature can cause the mercury to expand, which can be used to measure the temperature of the body.