Traceable calibration needs to be done before the FIRST significant measurement is attempted. Otherwise you have little assurance of a way to reproduce results. Recommended reading is Traceable Temperatures, 2d Ed by Nicholas & White (Wiley 2001). It's much more about measurement reliability than it is about temperature measurement.
January 2016 Cartoon Caption ContestBob's punishment for missing his deadline was to be tied to his chair tantalizingly close to a disconnected cable, with one hand superglued to his desk and another to his chin, while the pages from his wall calendar were slowly torn away.122 comments