They are easier to read, but if the battery is low you can get a wrong read. Also, it depends on the quality of the thermometer.
a thermometer that you stick under your tongue and the one that you stick in your ear.
tympanic, or reading from the ear, is not the best way to check a temperature especially in young children and babies. The best way is rectal or under the arm. But to answer your question, in a...
Place it in ice water. It should read 32°.
"BDX"