On 25 Feb 2007 04:07:26 -0800, "David Ames"
wrote:

I remember several years ago, on one of the local weather broadcasts,
a reporting station was out of service because of a defective
thermocouple. I seem to recall, also, mutterings as to whether a
thermocouple could be correctly calibrarted.

David Ames


To respond to the subject, check froogle, they list many.

difficult to automate readings from a mercury thermometer, I would
think.