This mod adds an entity called the heat pipe thermometer, It looks like the constant combinator and is crafted from a constant combinator with a heat pipe.
It outputs the temperature of an adjacent heat pipe (including diagonal). Modded entities do not work.
STABILITY ISSUE:
the mod crashes if the heatpipe that the mod is reading is removed before the thermometer reading it is due to the mod not checking the heatpipe in question still exists