Objects in image: Ruler
Text visible in image: |, 10, 20, 30, 4, 2003T151
Question: what is the serial number?
Answers: 2003t151, 2003t151, 2003t151, 2003t151, 2003t151, 2003t151, 2003t151, 2003t151, 2003t151, 2003t151