Try Amazon....or any of the other on line kitchen stores.
Linda C

Here is a link that might be useful: Amazon

I have tried numerous places and have never seen the exact one they use. Thanks for suggesting Amazon though, they have a larger selection of the Polder thermometers. I'll keep trying.

Last time I looked, the thermometer they were using was the Thermapen Instant Read, available from the Baker's Catalog (King Arthur flour). It was their top-rated, but comes with a $79.00 price-tag! I got it for my DH two years ago, and it really is a wonderful tool--very accurate, thin probe so you can even use it to check chicken breasts. I also use it to check the temperature of ingredients, etc.

One caveat--be very careful when washing--we got a bit sloppy, got some water inside, and the circuit board went. The company that manufactures the thermometer very cheerfully gave us a new thermometer for less than the cost of replacing the circuit board (it had been out a warranty over a year...) Now we carefully wipe it down with a slightly damp cloth.
I've included a link to our source, but the link into this particular thermometer seems to be broken....

Here is a link that might be useful: Catalog with thermometers

THANK YOU SO MUCH-----you can't imagine how long I have been looking for this thermometer. This is why I love this site. It is awsome! If you can't find the answer here, nobody has it. Also, thank you for the warning. At that price, I do want to be cautious. You made my day!!!!! doesn't take much, ha, ha.