Temperature regulating control device and method of making the same

In a temperature regulating control device comprising a housing means, a rotatable knob carried by said housing means for selecting a temperature said control device is to tend to maintain, and an ambient temperature sensing means carried by said knob for indicating the ambient temperature being sensed by said temperature sensing means, said knob having an axis of rotation and having a chamber therein, said temperature sensing means being carried in said chamber of said knob, said temperature sensing means comprising a spiraled bimetallic means, said temperature sensing means having a hub, said spiraled bimetallic means having outer end means and inner end means, said inner end means being carried by said hub and said outer end means comprising an indicator means, said knob having a side thereof that faces said housing means, the improvement wherein said side of said knob has opening means therethrough that is coaxial with said axis of rotation and that leads to said hub so as to permit rotatable adjustment of said hub relative to said knob by the insertion of a suitable tool into said opening means to engage said hub therewith.