Which item was used to tap shoulders of a candidate to confer knighthood?

The accolade is a ceremony to confer knighthood. It may take many forms, including the tapping of the flat side of a knighting sword on the shoulders of a candidate (who is himself sometimes referred to as an accolade during the ceremony) or an embrace about the neck.

In the first example, the "knight-elect" kneels in front of the monarch on a knighting-stool. First, the monarch lays the side of the sword's blade onto the accolade's right shoulder. The monarch then raises the sword just up over the apprentice's head, flips it counterclockwise so that the same side of the blade will come in contact with the knight's body, and places it on his left shoulder. The new knight then stands up, and the king or queen presents him with the insignia of his new order. Contrary to popular belief, the phrase "Arise, Sir ..." is not used.