This thermostat has "Comfort Zone" witten on the front with numerals
embossed in the cover where room temperature is set. When I pull off
the outside cover, there are 2 small screws that look like fine
adjustment inside. The thermostat varies the temperature by 10
degrees. If you set it half way right the temp will run from 66-76
degrees. If these 2 screws are like "limit adjustments" where would
one start to get this temperature to vary less. This is a double pole
thermostat rated at 22amps, running 2 1500 watt baseboards. 220 volt.