I would use the Kodak process thermemeter in a limited mode - only for calibrating others. I've broken too many glass-mercury thermometers as it is - ask me about using the old sling psychrometer for measuring humidity...Originally Posted by Flotsam
If you have one of the "dial" types without the adjusting nut, it must be an "old" one ... (or a really "el cheapo"). I can't remember seeing any of those - ever - and I started in Calibration some fifty years ago.
The "newer" dial thermometers are relatively inexpensive, reliable and durable ... and in my opinion totally adequate for ALL photographic purposes - including color - (see "Cibachrome logo"). Check to see that there is an adjusting nut before you buy one.