roy wrote:
I am building an incubator for elementary kids to hatch chicken eggs.
Part of the challenge is to use only free, recovered items So far all
items have been free:
- Omaha Steaks shipping box
- plexiglass from discarded poster frame
- electric cord with plug
- light socket- computer cooling fan with wall wart (for circulation)
- wire mesh.

Only items I'm missing are thermostat and thermometer. I know that
many household appliances contain temperature regulation devices such
as thermostats, thermal switches and thermistors. Some appliances and
systems even have temp control circuits with digital readout.

My challenge is to find something that will hold temp at about 100°F
(38°C) and run on 120Vac. Clothes dryer? Oven? Iron? TV?

Jeeze! Use a hen.

After the eggs hatch:

Use a 75-watt light bulb. Check the chicks. If they move closer to the bulb,
increase the wattage.

You don't need no stinkin' "thermostat."