Thanks everyone. I looked at at many websites after reading all your postings and was quite surprised to see the range of prices for these thermometers - from way less than $100 to all the way up to near $1,000 - WOW! I ended up ordering a Fluke Max+ from Amazon. My main purpose for buying a thermometer is to check for fiver wheel bearing temps as we travel. I haven't had a problem to date, but just want to be safe.
I also ordered a TPMS from TST to keep track of trailer tire pressures for the same reason.
We started RVing in 1997: I don't know what i would have done to get all the help I've gotten without you folks on this forum!
Thank you all again!
Mike