So really what your wanting to do is install thermal probs in key spots to monitor temps that report bback to a LCD screen? If that's what your looking for then this is about all I could find. http://www.frozencpu.com/products/5401/tmp-38/Thermal-Star_7-Backlight_Illuminated_Thermometer_Fan_Bus_TM07.html?tl=g4c133s492
Nobody really makes anything like that because all the sensors are already built into the MB, CPU, VC, and everything else. It's easier to use those and just download freeware to monitor them. I see it more of a business thing, why would a company spend r&d time to make something that only a few people will buy. Supply and demand.
Thinking about it I'm guessing the server is tucked away in a small closet with no monitor attached to it. Could always use software to monitor temps and use Remote Desktop to another computer to watch the software.