The hasta (Sanskrit: हस्त (hásta); Chinese: 肘 (pinyin: zhǒu)) is a traditional Indian unit of length, measured from the elbow to the tip of the middle finger. It equals 24 aṅgulas orﾠ about 18 inches, about 45 centimetres.
400 hastas make one nalva.
References
Hasta (unit) Wikipedia(Text) CC BY-SA