A Fahrenheit thermometer is easy to build. Use a centigrade sensorrantreb said:Hi, Does anyone have info on a digital fahrenheit thermometer that uses a 7101 and lm34. i am interested in the led readout and fahrenheit scale. please note that the lm35 is celcius and the 7106 is lcd. i do not want a pic. for some reason the digital fahrenheit thermometer with led readout is hard to come by.