The circuit shown with the LM3914 was found in the March 1992 issue of Radio Electronics magazine. The circuit has a full-scale adjustment.
September 2016 - It can be obtained from Mouser Electronics modules with 2.4 inch from 4D Systems...
The operational amplifiers used in this circuit are old. The circuit is from documentation of the 70's, but...
April 2017 - Texas Instruments' new high-precision TMP468 sensor can now be obtained from Mouser...