Looks like we want Auto Meter #3435, reads 140-340F, with a 6-foot tube. Best price I have seen so far is this place for $59:
http://www.martelbros.com/cgi-bin/store/ws400CS.cgi
The liquid-filled #5435 looks nice too for $78 but not for something I'm only using temporarily!
BTW, I couldn't locate the gauge you show the photo of above... what number is that??
