This mathematics ClipArt gallery offers 8 images of thermometers, including illustrations of combination Celsius-Fahrenheit thermometers.
An instrument for measuring temperature, founded on the principal that changes of temperature in bodies…
Fahrenheit thermometer at 41 degrees. Blood heat, water freezes, and zero are all marked on the right…
"Thermometers showing the corresponding points for water's freezing and boiling." -Avery 1895
An illustration of thermometers in Fahrenheit and centigrade/Celsius with freezing and boiling labeled.