The Copper Rice Measure is the twenty-sixth treasure that can be found in Uncharted 2: Among Thieves.
The Copper Rice Measure is found in Chapter 6 - Desperate Times . This artifact can be found in a pretty bizarre place, and lord only knows how it actually got there. Once you're on the semi-circular rooftop of the hotel, you can jump into the second floor window to continue your quest. However, if you instead head to the far right end of the semi-circle, at the place it ends, you can find this treasure sitting alongside the building. It's easy enough to grab once you know precisely where it is.