Thermometer

There is a thermometer on our back porch which is a large round dial with a thick needle, so it looks similar to an analog clock. Both kids have a hard time believing that it is not a clock.

Phineas: (pointing at the thermometer) “Nate, why that not a clock?”
Me: “Well, ‘clock’ and ‘thermometer’ are words that describe what a thing does. This measures temperature, and so we call it a thermometer.”
Phineas: “Why 'momer?"
Me: "Are you asking something about the thermometer?"
Phineas: "mer?"
Me: (slowly and clearly) "ther-mah-meeter"
Phineas: (slowly and clearly) "Fin-ee-us"