Would I need a thermometer with a thermostat?

[Marzipan]

Yes you always want a way to check what the inside temperature if the enclosure is as the probe for the thermostat does not belong inside the enclosure.

Thanks for the fast reply! Does that mean a thermostat and a thermometer are working separately or is there some way to plug a thermometer into the thermostat? For instance if I have a pulse thermostat it turns the heat off every time a certain level of heat is reached, but how does it know the heat is reached without a thermometer? Or does it just simply sustain the level of heat it thinks is correct through the socket the heat mat is plugged into?
Sorry lol, I love snakes but I am technologically challenged in understanding exactly how it is that thermostats work...