YAD
Yad
A yad, literally, "hand," is a Jewish ritual pointer, popularly known as a Torah pointer, used by the reader to follow the text during the Torah reading from the parchment Torah scrolls. Beyond its practical usage, the yad ensures that the parchment is not touched during the reading. There are several reasons for this: handling the parchment renders one ritually impure and the often-fragile parchment is easily damaged. Moreover, the vellum parchment does not absorb ink so touching the scroll with fingers will damage the lettering. While not required when chanting from the Torah, it is used frequently and is considered a hidur mitzvah .The above text is a snippet from Wikipedia: Yad
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