OK, well, thanks fer nothing.....just kidding. ;-)
I decided to use an old 'shake down' type oral human thermometer as my standard,
and used a glass of warm water to compare to other thermometers as shown here:
Rebel’s Thermometer Calibration
http://cmfarm.us/ThermometerCalibration.html...
@Ridgerunner can you provide a link to the adjustable thermometer you got...
.....and did you calibrate it against a digital medical thermometer as show in the calibration link you provided.