Gauge, Temperature, 1/2"x3"x6", 0-250°F

The temperature is measured with a bimetal system inside the thermometer stem. The bimetal system consists

of two metal strips bonded together that have different expansion coefficients. Therefore, one strip will expand

faster than the other causing the bimetal strip to curl in proportion to its temperature. The bimetal system is heli-

cally wound and heat treated for long term stability. Temperature variations cause the bimetal strip to unwind or

wind tighter, which in turn rotates the pointer.