How can I add 2 pressure sensors BMP180 to Arduino Uno?

jboyton,

Thanks for that - it now works as you described using one BMP180!

So, based on your input, is it fair to say that the pin numbers used in the original script (2,3,4 & 5) correspond to UNO digital I/O pins by the same names? I assume yes.

Next, I added a second BMP180 to pins A4/A5 and modified the sketch to those pins...and it now works perfectly.

Thanks again for the assist!