I would like to have one of those thermometers!
I closely monitor indoor temps for several reasons.
1. Sometimes I will feel cold and consider turning up the thermostat, yet the thermometer on the wall next to the thermostat shows the set temp. Leave the thermostat alone and have a hot drink instead.
2. There is one room (technically a laundry room but not used as such) that has no installed heat. I placed a small space heater in there, set to maintain about 50F and store paints, caulks, etc., to prevent from freezing.
Gonna see if I can find one of those thermometers shown above! Thanks!