Tự làm thước bằng tờ tiền giấy, dây, băng keo và bút lông. Dùng tờ tiền giấy để làm thước. Dùng thước tạm như khi dùng thước thông thường.

I'm interested in that, but I only have a few mins. Can you give me at most the first 500 characters of a detailed explanation in English about that?
Measure your height with your makeshift ruler if you don’t have a tape measure or standard ruler.  Consider this method if you need to find your height right away and don’t have time to get a ruler. Be aware that this will be an approximate measurement. Making a ruler by measuring a dollar bill is easy because all bills in the United States are 6 inches long (½ feet).  Lay the bill next to the string. Lay the bill and string flat with your hand. Mark the end of the bill on the string with a mark